[meteorite-list] Cutting space rocks in CA

[Matson, Rob D. [US-US] via Meteorite-list]

In anticipation of blowing the dust off my lapidary saw to cut a few meteorites 
(it's been years since I last used it), I knew I would need to pick up some 
more denatured alcohol. So I popped into Home Depot, and to my surprise (or 
maybe not, in retrospect) they no longer sell it in CA because it's apparently 
been banned in this state. A little research suggests it was banned in CA a few 
years ago (probably for completely ridiculous reasons). So the question: what 
liquid do you Californians (and Canadians) now use to cut your meteorites? 
Isopropyl is still legal, so I suppose I could go that route. I'm pretty sure 
camp stove fuel is just ethanol (with a bitterant added) -- perhaps that can 
still be purchased in CA?  --Rob
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Re: [meteorite-list] Very sad news

[Matson, Rob D. [US-US] via Meteorite-list]

R.I.P. to John Blennert -- I met him once or possibly twice over the last 
quarter century, so knew of his considerable prowess hunting gold (via metal 
detecting) as well as meteorites, on this continent and others. I was not aware 
(though not surprised) to learn that his expertise also extended to 
archaeology. Thank you, Bernd, for passing on the sad news of John's passing, 
and to Bob Verish for sharing links to others' remembrances of him.  --Rob

-Original Message-
From: Meteorite-list  On Behalf Of 
Robert Verish via Meteorite-list
Sent: Friday, March 15, 2024 3:00 PM
To: bernd.pa...@paulinet.de; Meteorite-list@meteoritecentral.com
Subject: EXTERNAL: Re: [meteorite-list] Very sad news

CAUTION: This email originated from outside of Leidos. Be cautious when 
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Hello Bernd,

Indeed, this is very sad news.  Thanks for your post.
It should be noted that not only was John Blennert a legendary Arizona 
metal-detectorist in regards to gold and meteorites, he made substantial 
contributions to archeology.  (See links below)  He known worldwide, so it is 
no surprise that news of his passing came to us here on the Met-List by way of 
Germany.

https://urldefense.us/v3/__https://www.detectorprospector.com/topic/25727-we-lost-john-blennart-of-tucson/page/2/*comments__;Iw!!Az_Xe1LHMyBq19w!JSM9IYs46OhMRhvU3ssXq1s9--HuaHhDFDQRndA8k0sNb9k4C_cGOs5_uNRai-i6HLQkZXPX_k9L4_ZgZoNMyL5G_MCwhnXyjwkU$

https://urldefense.us/v3/__https://forums.robsdetectors.com/topic/5950-attention-doc/__;!!Az_Xe1LHMyBq19w!JSM9IYs46OhMRhvU3ssXq1s9--HuaHhDFDQRndA8k0sNb9k4C_cGOs5_uNRai-i6HLQkZXPX_k9L4_ZgZoNMyL5G_MCwht2J_32O$

https://urldefense.us/v3/__http://www.chichilticale.com/60.htm__;!!Az_Xe1LHMyBq19w!JSM9IYs46OhMRhvU3ssXq1s9--HuaHhDFDQRndA8k0sNb9k4C_cGOs5_uNRai-i6HLQkZXPX_k9L4_ZgZoNMyL5G_MCwhixBblt-$

https://urldefense.us/v3/__http://www.chichilticale.com/17.htm__;!!Az_Xe1LHMyBq19w!JSM9IYs46OhMRhvU3ssXq1s9--HuaHhDFDQRndA8k0sNb9k4C_cGOs5_uNRai-i6HLQkZXPX_k9L4_ZgZoNMyL5G_MCwhhqP-jXu$








On Wednesday, March 13, 2024 at 07:07:02 PM PDT, bernd.pauli--- via 
Meteorite-list  wrote:







Dear List,



It is my sad duty to inform you that John Blennert has passed away :-(



John, rest in peace!



Bernd


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[meteorite-list] Meteorites from 2024 BX1

[Matson, Rob D. [US-US] via Meteorite-list]

Congratulations on your finds, Zsolt! A little back-story from my end. I 
followed 2024 BX1 from the moment of its discovery (having been fortunate 
enough to be at my computer when I got the first JPL/SCOUT alerts).  After the 
first 7 observations, the minor planet community knew it was going to be an 
impactor in northern Germany in less than a couple hours (21 Jan 2024 00:32:45 
UT). As the # of telescopic observations grew from 7 to 20 to 50 to over 100, I 
kept adjusting the impact trajectory, ultimately constraining the terminal path 
to about 100-meter uncertainty. Meanwhile, I grabbed the radiosonde upper 
atmospheric wind data launched from Lindenberg (only 110 km away from the 
future fall location) and ran dark flight predictions. This is the first fall 
where I was able to generate a map of predicted mass locations ... BEFORE the 
meteoroid even hit the atmosphere!   I passed this map and kmz file on to 
Peter Jenniskens who was flying out the next day. (Also a few others who had 
expressed interest in searching for fragments of this Apollo asteroid.)

As Zsolt knows, this was no run-of-the-mill fall. In a fresh fall (such as the 
one that occurred north of Quartzsite, AZ at the end of December), the stones 
are almost always covered in black fusion crust -- usually a matte black for 
chondrites, or a shiny, glassy black for many types of achondrites. Not so for 
this new fall north of Brandenberg! If I had been over their searching, I could 
easily have walked right past these newly arrived rocks from space that to the 
casual eye look like terrestrial stones. Hats off to (I believe) the Polish 
team that made the first 3 or 4 finds, recognizing them for what they were!

2024 BX1 was not a large meteoroid: between 0.8 and 1.4 meters in size, 
depending on its albedo. The orbit is (or rather was) well established, with an 
aphelion that pretty much ruled out a (low albedo) carbonaceous chondrite. So 
the size was most likely around a meter or slightly less. The entry velocity 
was relatively slow (15.2 km/sec), but the entry angle was quite steep (only 15 
degrees from vertical). The former favored meteorites on the ground, while the 
latter still meant the total recovered mass would be low.

Anyway, kudos again on your rare finds, Zsolt! And a big shout out to Hungarian 
astronomer Krisztian Sarneczky for finding and rapidly reporting 2024 BX1! This 
was not Krisztian's first rodeo -- he has the unique distinction of having 
discovered not just one Earth impactor, but now THREE! (Less than a year ago he 
discovered 2023 CX1 -- the asteroid that entered over Normandy and was also 
successfully found by meteorite hunters.) Clearly he is doing something right 
with his setup and operational plan!

Cheers,
Rob

-Original Message-
From: Meteorite-list  On Behalf Of 
Zsolt Kereszty via Meteorite-list
Sent: Thursday, February 1, 2024 6:08 AM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] For sale 9.6 gr complete piece of new 2024 
BX1 prediction fall asteroid - very nee found Germany

CAUTION: This email originated from outside of Leidos. Be cautious when 
clicking or opening content.

Dear List Members!

Just I now finished my expedition in Germany, cmosed to Berlin at Ribbeck. It 
took for 6 days and 100 km long.
So I have ONLY one piece what I can sell, I keep my other piece. I have found 
it today.

I have in-situ photos, GPS coordinates, found time, soil sample from under the 
piece, plants, today local newspaper, german choclste :-) Thats a fully 
documented piece.

If I have measured it well in the field its 9.6 gr with cracked crazy 
translucent fusion crust. I didnt see ever such unique crust! Its an aubrite !

So the price with the additional things is 18000€

If I know well there is largest for sale piece of 2024BX1 recently.

If you interest contact me and I send you the images.

Best Regards!

Zsolt Kereszty
IMCA, GMA, MetSoc
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Re: [meteorite-list] Hunting Moldavites and some rare insights

[Matson, Rob D. [US-US] via Meteorite-list]

Thanks for sharing this video link, Paul! Very interesting, and shows how 
labor-intensive it is to find these guys! How did your friend get permission to 
dig at the site depicted in the video? For instance, do he pay some sort of 
daily fee to search?  --Rob

-Original Message-
From: Meteorite-list  On Behalf Of 
Paul Gessler via Meteorite-list
Sent: Monday, November 6, 2023 7:17 PM
To: meteorite-list 
Subject: EXTERNAL: [meteorite-list] Hunting Moldavites and some rare insights

CAUTION: This email originated from outside of Leidos. Be cautious when 
clicking or opening content.

A fellow rockhound who is from BC who owns a great shop in Vancouver just 
posted a surprisingly insightful video of him digging for moldavites.
I think you all might enjoy this.

-Paul Gessler


https://urldefense.us/v3/__https://www.youtube.com/watch?v=6ID6wLzQ92c__;!!Az_Xe1LHMyBq19w!Ka5VgWUWZ_rz5q8HL0IwoAQMmWgseNEuWROk9IHiQY6L5b1PMdK60_MufYIyMe-fXg1kjo8JR7LZL4vEmoyfUgdWZUfsa9B0Dq62$
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[meteorite-list] Lake Ontario event

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I re-calculated the 19 Nov 2022 Lake Ontario meteorite fall.  Most of the 
meteorites landed in the lake, in shallow water reportedly less than ~70' deep. 
 Some meteorites up to 230g are seen landing off of Vineland Station but larger 
masses almost certainly fell down-track as well.

https://ares.jsc.nasa.gov/meteorite-falls/events/grimsby-ontario

https://en.wikipedia.org/wiki/2022_WJ1

Cheers,
Marc Fries
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[meteorite-list] Meteorite fall New Jersey 08 May 2023

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  There was a meteorite fall yesterday afternoon in New Jersey, 
with one meteorite falling through a house.  Radar indicates this was a larger 
fall than just a single stone, although overall mass is fairly low.  I am 
working on the data now, but am updating the NASA Meteorite Falls page as I go:

https://ares.jsc.nasa.gov/meteorite-falls/

  Keep an eye on this page throughout the day as I add a strewn 
field and other data.  Good luck!

Cheers,
Marc Fries
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[meteorite-list] Debris de-orbit

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

A SpaceX Dragon trunk re-entered over AZ, NM, CO last night.  Radar indicates 
large pieces reached the ground in CO and perhaps elsewhere.  I'll have an 
update on NASA Meteorite Falls later today.

Cheers,
Marc Fries
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[meteorite-list] New meteorite fall in Maine

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

There was a noontime bolide over eastern Maine this past Saturday which 
produced a meteorite fall. There was only one NEXRAD radar in range of this 
event but it appears in four radar sweeps, complete with short-range turbulence 
from falling rocks.  Details can be found here:

https://ares.jsc.nasa.gov/meteorite-falls/events/waite-me-08-april-2023-1556-utc

My apologies for not sending this email earlier.  If anyone wants a 
copy of the Google Earth .kmz send me an email at this address.

Cheers,
Marc Fries
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Re: [meteorite-list] Most confirmed falls in a year?

[Matson, Rob D. [US-US] via Meteorite-list]

Hi Mark – in 1933, people spent more time outdoors than they do today (and, 
probably less important, they enjoyed much darker night skies). I expect that 
the annual rate of meteorite-producing falls has remained about constant over 
the last century, with year-to-year variations consistent with Poisson 
statistics.

With improved technology (weather satellites, all-sky cameras, dashcams, ring 
cameras, Doppler radar, etc.), the odds of successful recovery of a given 
witnessed fall improves, but that factor may not be enough to counter the 
(likely) decrease in witnessed events (particularly daytime events). Remember 
that bolides with the greatest chance of producing rocks on the ground fall 
between local noon and midnight – from meteoroids that are “catching” up to the 
earth from behind and thus have slower average entry velocities than those 
occurring between midnight and noon. In the 1930s, a greater fraction of the 
population were outdoors from 8 am to 8 pm – a 12-hour time window when 64% of 
meteorite falls occur (based on Met. Bulletin data from 1860-2017). Of course, 
there are a lot more people in 2023 than in 1933, but most of those outdoors 
during the day are likely driving or staring at their phones (or both).   --Rob

From: Meteorite-list  On Behalf Of 
Mark Lyon via Meteorite-list
Sent: Monday, March 20, 2023 7:29 AM
To: Frank Cressy 
Cc: Finbarr Connolly ; Meteorite List 

Subject: EXTERNAL: Re: [meteorite-list] Most confirmed falls in a year?

That's surprising that there would be a record in 1933.  I figured new 
technology, rising populations, and an increase in meteorite hunters would mean 
that there were more witnessed falls more recently than 90 years ago.  Have the 
number of witnessed falls per year tended to be significantly higher more 
recently or has it stayed about the same?

On Mon, Mar 20, 2023 at 6:52 AM Frank Cressy via Meteorite-list 
mailto:meteorite-list@meteoritecentral.com>>
 wrote:
In addition to the 17 witnessed falls worldwide for 1933, that year also had 
two others that are possible falls, Elton, Texas and Willard (b) New Mexico.

Cheers,

Frank

On Saturday, March 18, 2023 at 03:45:48 PM PDT, Finbarr Connolly via 
Meteorite-list 
mailto:meteorite-list@meteoritecentral.com>>
 wrote:


1933 has the record with 17. 1949 had 13 and 1950, 76 and 98 all with 12.

Finbarr.

On Sat, Mar 18, 2023 at 9:20 PM Michael Gilmer via Meteorite-list 
mailto:meteorite-list@meteoritecentral.com>>
 wrote:
Hi Listees,

I was recently wondering, what year has the most confirmed witnessed falls?

I have been closely following falls since the year 2000, and according
to my records we have a few contenders in recent years. I am thinking
one of these must be the most.

2018 has 15 falls, but two of them are not official (HaH 346, aka
Ghadamis, was classified as a find) and a fall over Pakistan was not
recovered or recorded. This leaves 14 classified falls in a 12 month
period :

Jan 05, 2018 - Matarka (L6 chondrite) : Morocco
Jan 16, 2018 - Hamburg (H4 chondrite) : Michigan USA
Feb 16, 2018 - Ablaketka (H5 chondrite) : Kazakhstan
Apr 19, 2018 - Aba Panu (L3.6 chondrite) : Nigeria
Jun 01, 2018 - Mangui (L6 chondrite) : China (Hammer)
Jun 02, 2018 - Motopi Pan (Howardite) : Botswana
Jun 21, 2018 - Ozerki (L6 chondrite) : Russia
Jul 10, 2018 - Renchen (L5-6 chondrite) : Germany
Jul 26, 2018 - Glendale (L6 chondrite) : Arizona USA
July 27, 2018 - Benenitra (L6 chondrite) : Madagascar
Aug 12-17?, 2018 - "Bhakkar" (unofficial) (ordinary chondrite?) : Pakistan
Aug 21, 2018 - Gueltat Zemmour (L4 chondrite) : Morocco
Aug 26, 2018 - Hammadah al Hamra 346 (L6 chondrite) : Libya (aka "Ghadamis")
Sep 26, 2018 - Komaki (L6 chondrite) : Japan (Hammer)
Oct 28, 2018 - Ksar El Goraane (H5 chondrite) : Morocco
Dec 23, 2018 - Mhabes el Hamra (H4/5 chondrite) : Mauritania

2020 gave us Covid-19 and 13 classified falls :

Jan 01, 2020 - Cavezzo (L5-an chondrite) : Italy
Jan 09, 2020 - Zhob (H3-4 chondrite) : Pakistan (Hammer)
Feb 28, 2020 - Novo Mesto (L5 chondrite) : Slovenia
Apr 1-7, 2020 - Tihigrin (L4 chondrite) : Mali
Apr 24, 2020 - Gatuto (L6 chondrite) : Kenya (Hammer)
May 08, 2020 - Tiros (eucrite-cm) : Brazil
Jun 19, 2020 - Madura Cave (L5 chondrite) : Australia
July 02, 2020 - Narashino (H5 chondrite) : Japan (Hammer)
Aug 01, 2020 - Kolang (CM1/2 chondrite) : Indonesia (Hammer)
Aug 19, 2020 - Santa Filomena (H5-6 chondrite) : Brazil (Hammer)
Aug 25, 2020 - Tarda (C2-ung) : Morocco
Nov 04, 2020 - Djadjarm (L6 chondrite) : Iran
Nov 19, 2020 - Kindberg (L6 chondrite) : Austria

2016 gave us 12 classified falls :

Jan 24, 2016 - Osceola (L6 chondrite) : Florida USA
Feb 06, 2016 - Ejby (H5/6 chondrite) : Denmark (Hammer)
Feb 18, 2016 - Mount Blanco (L5 chondrite) : Texas USA
Mar 06, 2016 - Stubenberg (LL6 chondrite) : Germany/Austria
Mar 20, 2016 - Degtevo (H5 chondrite) : Russia
May 17, 2016 - Hradec Kralove (LL5 chondrite) : Czech Republic
Jun 02, 2016 - Dishchii'bikoh (LL7 chondrite) : Arizona

[meteorite-list] New meteorite fall outside McAllen, TX 15 Feb 2023

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Greetings all

  Radar, GLM, eyewitness, and other data indicate a voluminous new 
meteorite fall outside of McAllen, TX yesterday afternoon.  I will post images 
and a strewn field map ASAP on the ARES Meteorite Falls web page. 
https://ares.jsc.nasa.gov/meteorite-falls/

  Some free advice - be on your best behavior around south Texas 
ranchers.

Cheers,
Marc Fries
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Re: [meteorite-list] First meteorites from asteroid 2023 CX1

[Matson, Rob D. [US-US] via Meteorite-list]

Whoops – copied the non wind-drifted coordinates over to my Google Earth map. 
(Sigh.) For 10-grams, I put the location about halfway between Angiens and 
Houdetot. For 30-grams, a half-km east-northeast of Houdetot. For 300 grams, 1 
km due south of Fontaine-le-Dun. For 1 kilogram, 1 km south-southwest of 
Crasville-la-Rocquefort.  --Rob
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[meteorite-list] First meteorites from asteroid 2023 CX1

[Matson, Rob D. [US-US] via Meteorite-list]

I will put in my guess and say the first meteorite(s) were found a half mile 
south of Bourville. For light masses (10-30 grams), I’d put it further 
west-northwest, a half-mile south of Ermenouville. For heavy masses (1 kilo), 
I’d go further downrange to Brametot.  --Rob

From: Meteorite-list  On Behalf Of 
Mark Lyon via Meteorite-list
Sent: Wednesday, February 15, 2023 9:26 AM
To: Chris Peterson 
Cc: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: Re: [meteorite-list] Small, earth-impacting 
asteroid/meteoroid videos now showing up online

is there any more info on what was recovered and where?

On Wed, Feb 15, 2023 at 10:17 AM Chris Peterson via Meteorite-list 
mailto:meteorite-list@meteoritecentral.com>>
 wrote:
Meteorites have now been recovered.

Models suggest a single main mass of around 1kg from the terminal
explosion and multiple small pieces from earlier fragmentation events
along the meteor path.

Chris

***
Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com<https://urldefense.us/v3/__https:/www.cloudbait.com__;!!Az_Xe1LHMyBq19w!cALthBfR_8zkhppzBZCkenEcyci8-kzgVxNxzRADooQJWL6jBBacb-mFRKv2o4MI5Eb3$>

On 2/15/2023 3:56 AM, Graham Ensor wrote:
> Apologies for the last message. I misinterpreted the initial predictions
> and it does appear to have been heading the other way and AMS has it
> terminating near the coast slode to Dieppe and FRIPON even closer...other
> models now showing that indeed it may have dropped material on land. Good
> luck to my friends heading there for a search.
>
> Graham
>
> On Tue, Feb 14, 2023 at 3:55 PM Chris Peterson via Meteorite-list <
> meteorite-list@meteoritecentral.com<mailto:meteorite-list@meteoritecentral.com>>
>  wrote:
>
>> It was heading generally eastward over the Channel and was still burning
>> when it crossed the French shoreline. It is likely to have dropped
>> meteorites on land.
>>
>> Chris
>>
>> ***
>> Chris L Peterson
>> Cloudbait Observatory
>> https://www.cloudbait.com<https://urldefense.us/v3/__https:/www.cloudbait.com__;!!Az_Xe1LHMyBq19w!cALthBfR_8zkhppzBZCkenEcyci8-kzgVxNxzRADooQJWL6jBBacb-mFRKv2o4MI5Eb3$>
>>
>> On 2/14/2023 3:29 AM, Graham Ensor via Meteorite-list wrote:
>>> It was heading from France and terminated it seems just as it reached the
>>> channel so likely everything is in the sea if it did drop anything. Not
>>> seen any predictions that it made landfall in France or the UK. So close
>>> and yet so far.
>>>
>>> Graham
>>>
>>> On Mon, Feb 13, 2023 at 11:27 PM Darryl Pitt via Meteorite-list <
>>> meteorite-list@meteoritecentral.com<mailto:meteorite-list@meteoritecentral.com>>
>>>  wrote:
>>>
>>>>
>>>>
>>>> Nice!   :-)
>>>>
>>>> On Feb 12, 2023, at 11:10 PM, Matson, Rob D. [US-US] via Meteorite-list
>> <
>>>> meteorite-list@meteoritecentral.com<mailto:meteorite-list@meteoritecentral.com>>
>>>>  wrote:
>>>>
>>>> A small (~1-meter) asteroid that astronomers have been tracking for
>>>> several hours earlier today crossed over the English Channel one hour
>> ago
>>>> (3:00 UT 13 February) and broke up over the coast of Normandy. Many
>> videos
>>>> of it are already appearing on the web. Here’s one taken from Brighton,
>> UK
>>>> (south coast of England) looking across the channel toward France:
>>>>
>>>> https://twitter.com/KadeFlowers/status/1624967147708420103<https://urldefense.us/v3/__https:/twitter.com/KadeFlowers/status/1624967147708420103__;!!Az_Xe1LHMyBq19w!cALthBfR_8zkhppzBZCkenEcyci8-kzgVxNxzRADooQJWL6jBBacb-mFRKv2o0NVbFdK$>
>>>>
>>>> Should be numerous meteorites on the ground – the meteoroid was at about
>>>> 40-km altitude at the point it crossed the French coastline north of
>>>> Saint-Martin-aux-Buneaux, so nearly all of it should be over land.
>> --Rob
>>>> __
>>>> Meteorite-list mailing list
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>>>> https://pairlist2.pair.net/mailman/listinfo/meteorite-list<https://urldefense.us/v3/__https:/pairlist2.pair.net/mailman/listinfo/meteorite-list__;!!Az_Xe1LHMyBq19w!cALthBfR_8zkhppzBZCkenEcyci8-kzgVxNxzRADooQJWL6jBBacb-mFRKv2owi9xvUg$>
>>>>
>>>>
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[meteorite-list] Small, earth-impacting asteroid/meteoroid videos now showing up online

[Matson, Rob D. [US-US] via Meteorite-list]

A small (~1-meter) asteroid that astronomers have been tracking for several 
hours earlier today crossed over the English Channel one hour ago (3:00 UT 13 
February) and broke up over the coast of Normandy. Many videos of it are 
already appearing on the web. Here's one taken from Brighton, UK (south coast 
of England) looking across the channel toward France:

https://twitter.com/KadeFlowers/status/1624967147708420103

Should be numerous meteorites on the ground - the meteoroid was at about 40-km 
altitude at the point it crossed the French coastline north of 
Saint-Martin-aux-Buneaux, so nearly all of it should be over land.  --Rob
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[meteorite-list] Muskogee kmz

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I have finished calculating the landing sites for all of the radar signatures 
in the Muskogee fall, and they produced a nicely defined strewn field.  I 
cannot post the Google Earth kmz on the NASA website just because there is no 
file-sharing mechanism there. Feel free to email me at this address and I'll 
send you the kmz file.

The new calculation moves the strewn field slightly east for the heaviest 
masses, and expands the strewnfield slightly south and west.  It looks like it 
was a fairly massive fall.

Cheers,
Marc Fries
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[meteorite-list] Strewn field for Muskogee

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

The strewn field is now published for the Muskogee event.  This was created 
using the newest version of Jormungandr which is still in mid-validation, so I 
may update it.  Even if so it shouldn't change much.

Evidence suggests large meteorites fell near the airport, in the 100g range.

https://ares.jsc.nasa.gov/meteorite-falls/
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[meteorite-list] High-certainty meteorite fall on Muskogee, OK

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Greetings

  It appears that this event on AMS resulted in a meteorite fall:

https://ams.imo.net/members/imo_view/event/2023/374

  The event occurred at 03:38:50 AM local time on 20 January 2023, 
or 0938:50 UTC. It appears in GLM data and in data from four separate NEXRAD 
radars showing signatures of falling meteorites. The bolide traveled from NW to 
SE starting off east of Tulsa and terminating over Muskogee. Tomorrow I will 
generate a NASA Meteorite Falls web page for this event complete with a 
computed strewn field, in the meantime you can visit my Twitter account for 
first-draft radar images of the fall (Marc Fries, @warrantyviolatr - not a NASA 
account!).

  The most massive meteorites probably landed east of the Muskogee 
airport along a line extending to the SE. Winds were out of the SW, so smaller 
meteorites (100s of grams and less) landed in the southern end of Muskogee 
extending towards the NW.  This will be a roughly banana-shaped strewn field 
with the large end extending towards the SE and smaller meteorites extending 
towards the NE.

  More to come in the morning...

Good luck!
Marc Fries
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[meteorite-list] Meteorite Fall - Grimsby Ontario 19 Nov 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Yes that same Grimsby.  They get a new meteorite fall for 2022.  Don't get mad 
at me, I just report these things!

Web page is up at: https://ares.jsc.nasa.gov/meteorite-falls/

I am also posting tweets under my own account.  Find it by searching for Marc 
Fries, @WarrantyViolatr  Be advised that this is a personal account and 
contains opinions and comments that are not NASA-approved.

Most but not all of this fall is in Lake Ontario.  Small masses should be on 
the ground east of Grimsby, and larger ones might be on land near McNab.

Cheers,
Marc Fries
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[meteorite-list] Georgia Meteorite Fall 26 Sep 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy

  A new meteorite fall occurred on 26 Sep 2022 UTC east of Junction 
City, GA.  Meteorites have been recovered from this event.

  Details can be found at:

https://ares.jsc.nasa.gov/meteorite-falls/

Cheers,
Marc Fries
--
HISTORICAL AMERICAN METEORITE OF OVER 42 KG
Bonhams Natural History auction on Sep 21 offers 50+ lots of stellar planetary 
meteorite specimens, including a superb Canyon Diablo specimen. Browse the 
auction and register to bid online.

Link:  
https://www.bonhams.com/auction/27815/cabinet-of-curiosities-natural-history-entomology-and-minerals/?utm_source=meteroritecentral_medium=banner_campaign=nat-sep-22_id=col-nat-sep-22
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[meteorite-list] Update on 24 Aug 2022 Colorado event

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I have posted a NASA page for the recent Colorado event:

https://ares.jsc.nasa.gov/meteorite-falls/events/coalmont-co

This is a POSSIBLE meteorite fall.  It only produced one radar signature but I 
am including it because the signature is fairly strong and features short-range 
turbulence.  Having only one signature reduces confidence that this is a fall, 
but the appearance of turbulence makes it more interesting.  Also, the Denver 
mineral show is coming up and some folks have contacted me stating that they'd 
be interested in investigating this event as part of a trip to that show.  So, 
here it is - good luck!  I hope it is a fall.

Cheers,
Marc

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[meteorite-list] Interesting radar signature - Colorado bolide, AMS event 5337

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy

  I've found something interesting in radar data from the 24 Aug 
event over Colorado and would like to ask for input.  All radar observations of 
this event were from moderate to long range as the relatively nearby Cheyenne 
radar was down.  The Front Range (KFTG) radar shows a strong signature in a 
single sweep that may be worth investigating. It appears in the 0233 data set, 
in the 1.80 degree sweep.  The signature is just west of Coalmont, CO.  It is a 
strong radar reflection with short-range turbulence as seen in the Velocity 
data.

  The signature appears along the ground track calculated by AMS.  
It occurs about 4 minutes after the AMS time and appears to have short range 
turbulence. These are factors which point towards a detection of a meteorite 
fall.  It only appears in one radar sweep, although KRIW may have also picked 
it up in the 0234 data set, 1.32 degree sweep.

  Thoughts?

Cheers,
Marc Fries

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[meteorite-list] Great Salt Lake meteorite fall, 13 Aug 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

After a series of computer-based misadventures, I have (finally) posted a NASA 
Meteorite Falls page for the Salt Lake City meteorite fall:

https://ares.jsc.nasa.gov/meteorite-falls/

To date more than a dozen meteorites have been recovered.  To the best of my 
knowledge they were all on the western shore of the Great Salt Lake, but it 
appears some smaller meteorites may also be found on the eastern shore quite 
close to Salt Lake City. The meteorites recovered to date have trended to 
masses in the hundreds of grams.

Be very careful hunting this fall.  The ground is recently-exposed lake floor 
and is soft and wet. Temperatures are high and there are no drinkable water 
sources. People have reported getting trucks and off-road vehicles stuck, and 
it is a long walk to the nearest road. Use good desert survival practices and 
bring lots of water. Sources such as the National Park Service can be of use in 
planning a safe trek:

https://www.nps.gov/subjects/healthandsafety/trip-planning-guide.htm

Feel free to contact me with any questions about this event - 
marc.d.fr...@nasa.gov

Cheers,
Marc

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Re: [meteorite-list] Much-delayed notice of UT meteorite fall

[Matson, Rob D. [US-US] via Meteorite-list]

Hi Marc - welcome back! This fall also appeared on Pocatello, Idaho radar. Over 
a dozen meteorites have been recovered to date, some weighing over 400 grams. 
From cut surfaces, it appears to be an ordinary chondrite - perhaps H5 or H6.  
--Rob

From: Meteorite-list  On Behalf Of 
Fries, Marc D. (JSC-XI211) via Meteorite-list
Sent: Thursday, August 25, 2022 12:58 PM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Much-delayed notice of UT meteorite fall

I have been on international travel for almost two weeks, and the loaner 
computer I was using "bricked".  I've been without a computer or email for 
almost two weeks as a result.  On 15 August I sent an email to the List from my 
phone to try to get the word out, but that apparently didn't work.  Here's the 
original email again, and now that I'm back in the States with a working 
computer I'll generate a strewn field for the Salt Lake City fall ASAP.

Cheers,
Marc Fries

Original email:
Greetings

I am on international travel with a bricked computer and am trying to get 
word out about a possible Utah meteorite fall. This was a daytime bolide of 13 
August.  I will have difficulty working on this event until I return stateside 
in almost two weeks, so others need to jump in and check this event.

   Radar signatures appear in higher elevations of the KMTX 1428 radar data 
set. They are mostly visible in the Velocity data because the radar is nearby 
and there is interference from ground clutter and weather. They appear roughly 
parallel to and north of I-80 along a track that approximately matches both the 
AMS ground track and GLM signatures. The ground track of these radar signatures 
is long, but that appears to match GLM data showing a low entry angle, fairly 
long ground track. I see signatures consistent with fast-moving meteorites in 
five radar sweeps (between 4 and 12.4 degree sweeps).

Videos of this event show a fast moving, bright daytime fireball. I'm 
surprised to see radar signatures given the apparent speed, but they appear 
reasonable for a meteorite fall. The ground track is partially over the Great 
Salt Lake and partially over shoreline not far north of I-80.

Sent from my iPhone

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[meteorite-list] Much-delayed notice of UT meteorite fall

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I have been on international travel for almost two weeks, and the loaner 
computer I was using "bricked".  I've been without a computer or email for 
almost two weeks as a result.  On 15 August I sent an email to the List from my 
phone to try to get the word out, but that apparently didn't work.  Here's the 
original email again, and now that I'm back in the States with a working 
computer I'll generate a strewn field for the Salt Lake City fall ASAP.

Cheers,
Marc Fries

Original email:
Greetings

I am on international travel with a bricked computer and am trying to get 
word out about a possible Utah meteorite fall. This was a daytime bolide of 13 
August.  I will have difficulty working on this event until I return stateside 
in almost two weeks, so others need to jump in and check this event.

   Radar signatures appear in higher elevations of the KMTX 1428 radar data 
set. They are mostly visible in the Velocity data because the radar is nearby 
and there is interference from ground clutter and weather. They appear roughly 
parallel to and north of I-80 along a track that approximately matches both the 
AMS ground track and GLM signatures. The ground track of these radar signatures 
is long, but that appears to match GLM data showing a low entry angle, fairly 
long ground track. I see signatures consistent with fast-moving meteorites in 
five radar sweeps (between 4 and 12.4 degree sweeps).

Videos of this event show a fast moving, bright daytime fireball. I'm 
surprised to see radar signatures given the apparent speed, but they appear 
reasonable for a meteorite fall. The ground track is partially over the Great 
Salt Lake and partially over shoreline not far north of I-80.

Sent from my iPhone

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[meteorite-list] Meteorite Fall observed - Natchez MS 27 April 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

A remarkable meteorite fall has occurred east of Natchez MS.  This event was 
widely reported in media because loud sonic booms were reported over a wide 
area.  This was a daytime fireball and a single video (as far as I know) has 
emerged on Twitter.

Weather radar records a nearly vertical column of falling meteorites, seen in 
at least eleven radar sweeps in at least four separate radars.

https://ares.jsc.nasa.gov/meteorite-falls/

It is currently the front page item for the NASA Meteorite Falls page.  At 
present no meteorites have been recovered to my knowledge, but I assign a high 
certainty that meteorites have fallen.

Cheers,
Marc Fries
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[meteorite-list] Notice of meteorite FALL 27 Apr 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

A significant meteorite fall has occurred outside Natchez, MS yesterday at 8AM 
local time.  Detailed strewn field to follow soon.

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[meteorite-list] Happy Birthday, Sutter's Mill

[Matson, Rob D. [US-US] via Meteorite-list]

The Sutter's Mill, California, fall was 10 years ago today. Hard to believe a 
decade has already passed since that exciting event!  --Rob
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[meteorite-list] Fredricksburg TX event 29 Jan 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  We've had a bunch of fireballs with dozens of AMS eyewitness 
reports over the last couple of months.  In going back over them I found a 
really nice one that escaped my notice:

https://fireball.amsmeteors.org/members/imo_view/event/2022/740

  The videos of this event show an exceptionally long-lasting 
fireball (~14s) with pronounced fragmentation.  It appears that multiple 
objects slow down towards the end of the fireball. This appears to be a good 
candidate for a meteorite fall.

  Searching the radar data yielded some interesting signatures 
~35km NW of Fredricksburg, TX on the KGRK, KEWX, KDYX, and KSJT radars.  None 
are especially strong but they seem to cluster.  I cannot find any pronounced 
surface features, windmill farms, radio towers, or other reflectors at this 
site.  I will draw up a NASA Meteorite Falls page for this event and share 
images once I'm happy with the data refinement.  In the meanwhile, could y'all 
have a look?  This one may be promising.  There is a signature on KSJT in the 
1.49 degree sweep, 0602 data set, which appears only 40s after the fireball 
terminus.  Jormungandr calculates that it corresponds to a/an 11.1kg 
meteorite(s).

Cheers,
Marc Fries
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[meteorite-list] Update: Meteorite Fall outside Patch Grove WI 20 Jan 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  After parsing through some more data I've convinced myself that 
there was a (probably small) meteorite fall near Patch Grove, WI on 20 January. 
 NASA Meteor Watch (look them up on Facebook) reports that this fireball was 
very slow-moving, near the lower limit of infall velocities for meteoroids.  
This makes for a relatively weak fireball and enhanced chance of meteorite 
survival - but it also means this could be a small body that wouldn't have 
survived if not for the low speed, and few meteorites were produced.  On radar 
I see radar signatures from falling meteorites of mean masses 2.8g and 0.2g, 
seen on two different radars (KARX and KGRB) which improves confidence in the 
detection.  Seismic data shows a relatively weak sonic boom, and only one AMS 
eyewitness reported hearing this one and it was electrophonic noise and not a 
sonic boom.  It does not show up in GLM data.
  All told, my conclusion was this was a small body that produced a 
small fall, largely on account of its very low infall speed.  The ground is 
mostly farmland and should be favorable for recovery.  It might be best to 
focus on finding meteorites in the sub-100g range, but that is just my opinion.

NASA Meteorite Falls page is up:

https://ares.jsc.nasa.gov/meteorite-falls/

If you have trouble with the website try using a phone.  I can't see it on my 
computer but it shows up fine on my phone.

Good luck!
Marc Fries
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[meteorite-list] Possible meteorite fall, WI 20 Jan 2022

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  AMS' meteor event 512 may have produced a fall, as there is an 
interesting radar signature that matches in time and place:

https://fireball.amsmeteors.org/members/imo_view/event/2022/512

  The bolide was traveling from NE to SW according to AMS.  I've 
found one video of the event:

https://www.youtube.com/watch?v=a3xfNG_jLlo

  Radar shows a signature at 5km AGL altitude, just west of the 
town of Patch Grove, WI.  I'd prefer to see signatures on multiple radars and 
altitudes to build confidence that we're seeing a fall, but this single sweep 
does look similar to those seen in previous falls.  Its' altitude probably 
precludes interference from birds, and it does not have the traditional shape 
or intensity of a reflection from an aircraft.  It is also almost exactly at 
the terminus end of AMS' ground track estimate.  The event does not show up in 
Geostationary Lightning Mapper data, and it produced a fairly weak signature in 
a seismometer approximately 50 miles away. All of these add up to a small 
meteorite fall, but probably find-able given that the terrain is mostly 
farmland.
  I'll draw up a NASA web page for this event, but wanted to pass 
on the news so you all can start talking about it.

  Fun factoid - the radar signature for this event is only 35 miles 
from Mifflin, WI.

Cheers,
Marc FRies
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Re: [meteorite-list] NJ 13 Nov 2021 bolide - possible FALL

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Quick update...

https://ares.jsc.nasa.gov/meteorite-falls/events/cape-may-courthouse-nj


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Re: [meteorite-list] NJ 13 Nov 2021 bolide - possible FALL

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I forgot to mention - the radar signatures appear over land, just north of Cape 
May, NJ.  There isn't a lot of land there, but this is a special event that 
merits extra effort.  More soon.

-Original Message-
From: Fries, Marc D. (JSC-XI211) 
Sent: Monday, November 15, 2021 1:11 PM
To: meteorite-list@meteoritecentral.com
Subject: NJ 13 Nov 2021 bolide - possible FALL

Howdy all

I have found some interesting radar returns associated with the New 
Jersey daytime bolide on 13 Nov 2021.  I am sending this email as advance 
notice that more information is coming, and to give as much time as possible 
for others to start looking into the data.  This is AMS event number 7611 for 
2021:

https://fireballs.amsmeteors.org/members/imo_view/event/2021/7611

I believe the ground track in the AMS report is incorrect for two 
reasons.  One, if you look at the highest-confidence eyewitness reports with 
directions turned on, you'll see that they are reporting a ground track much 
further to the south.  Two, if this event followed the AMS ground track then 
there should have been many reports of sound in the NJ/NY area.  There are none.

Also, go look at "NASA Meteor Watch" on Facebook.  I can't link to it 
here but they report a ground track much further south, terminating near Cape 
May, NJ.

I found some very interesting radar returns near Cape May, THEN looked 
at NASA Meteor Watch and found their ground track bullseyes the radar returns.

Furthermore, NASA Meteor Watch reports that this bolide matches the 
expected speed and direction for a body originating from the Taurid meteor 
shower which is currently active.  These bodies originate from Comet Encke.  
Therefore, this event may be a cometary-origin meteorite fall, from a known 
comet no less.

At this point I have found signatures in data from two different 
radars.  I'm taking the unusual step of stopping my own analysis long enough to 
spread this word.  If you work with video, radar, seismometer data, or any 
other form of meteorite fall research, I suggest you look closely at this event 
and let's start a discussion.

Back to the data...   I will put up a web page on this event on NASA 
ARES' website ASAP.

Cheers,
Marc Fries
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[meteorite-list] NJ 13 Nov 2021 bolide - possible FALL

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

I have found some interesting radar returns associated with the New 
Jersey daytime bolide on 13 Nov 2021.  I am sending this email as advance 
notice that more information is coming, and to give as much time as possible 
for others to start looking into the data.  This is AMS event number 7611 for 
2021:

https://fireballs.amsmeteors.org/members/imo_view/event/2021/7611

I believe the ground track in the AMS report is incorrect for two 
reasons.  One, if you look at the highest-confidence eyewitness reports with 
directions turned on, you'll see that they are reporting a ground track much 
further to the south.  Two, if this event followed the AMS ground track then 
there should have been many reports of sound in the NJ/NY area.  There are none.

Also, go look at "NASA Meteor Watch" on Facebook.  I can't link to it 
here but they report a ground track much further south, terminating near Cape 
May, NJ.

I found some very interesting radar returns near Cape May, THEN looked 
at NASA Meteor Watch and found their ground track bullseyes the radar returns.

Furthermore, NASA Meteor Watch reports that this bolide matches the 
expected speed and direction for a body originating from the Taurid meteor 
shower which is currently active.  These bodies originate from Comet Encke.  
Therefore, this event may be a cometary-origin meteorite fall, from a known 
comet no less.

At this point I have found signatures in data from two different 
radars.  I'm taking the unusual step of stopping my own analysis long enough to 
spread this word.  If you work with video, radar, seismometer data, or any 
other form of meteorite fall research, I suggest you look closely at this event 
and let's start a discussion.

Back to the data...   I will put up a web page on this event on NASA 
ARES' website ASAP.

Cheers,
Marc Fries
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Re: [meteorite-list] [EXTERNAL] Meteorite-list Digest, Vol 229, Issue 17

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

Re: the 16 Oct 2021 daytime fireball seen in video from Tucson. On 
further examination, the expanding-ring feature on radar appears to be birds 
leaving their roosts at daybreak, and it is just a coincidence that it appears 
in the same 10-minute GLM exposure as the bolide.  
GLM data need to be processed to produce the actual ground track - this 
event shows up on both GOES East and GOES West imagery, and each one imposes an 
error in actual position based on the viewing angle of the satellite.  NASA 
Bolides normally does this analysis, but they're slow.  Right now their most 
recent events are from mid-September: https://neo-bolide.ndc.nasa.gov/#/   It 
looks to me like the bolide terminated in northern Mexico from the GLM data, 
but again - someone who actually knows how to correct their data needs to have 
a go at it.
I drew up an azimuth towards the terminus using the train station video 
and Google Earth, and it does appear to coincide with the terminus location 
inferred from GLM data.  At this point I'm thinking the terminus, was in Mexico 
approximately 40 miles south of the US border.  The video also shows that the 
fireball was quite fast, which may explain why AMS eyewitnesses were all over 
the place with their azimuth reports. It also, of course, decreases the 
likelihood that any meteorites reached the ground.
I searched for seismometer signatures for this event and came up empty, 
but there was only one nearby seismometer with data available yesterday.

Cheers,
Marc Fries
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[meteorite-list] Daytime fireball 16 Oct 2021

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

There was a daytime bolide over the AZ/NM/Mexico area this morning (16 Oct 
2021) at 1323 UTC which may have generated a meteorite fall.  The American 
Meteor Society is reporting it here: 
https://fireball.amsmeteors.org/members/imo_view/event/2021/6611

At the time of this writing, the AMS is reporting a ground track just east of 
Tucson. This event shows up clearly on both the GOES East and West satellite 
data, in the Geostationary Lightning Mapper (GLM) imagery, but with a ground 
track that appears to be farther to the SE and in northern Mexico. 

NOAA weather radar imagery from the KEPZ radar (El Paso, TX) reveals a striking 
feature which appears near the location suggested by GLM and at the time 
reported by GLM and eyewitness accounts.  This feature is a rapidly-spreading 
circular feature centered on: 

107.9987°W 30.7232°N

This feature appears as an expanding circle at low altitude, moving at 30 mph 
outward in all directions following the time of the bolide.  This circular 
signature may be birds scared into flight by the sonic boom. This same bird 
feature is visible in radar data for the Monahans and Indian Butte meteorite 
falls. No falling meteorites are obvious, but the event occurred at long range 
from the radar and the weak radar signatures of falling meteorites may not 
appear.  

In summary, GLM, eyewitness, and weather radar data indicate that a meteorite 
fall may have occurred in Mexico near the coordinates listed above.  This site 
is populated and features a few farming communities, with the "El Chocolate" 
dry lake bed to its south.  Conditions should be good for recovery of 
meteorites.  Analysis of radar data will continue.

Cheers,
Marc Fries
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Re: [meteorite-list] Ownership of Space-X Debris Question

[Keith D Lemons via Meteorite-list]

MikeG raises a good question about ownership of the Space-X debris found on the 
farm.  As you all are familiar, the general rule is that the land owner owns a 
meteorite find thereupon per the Forest City Meteorite case (Iowa, 1890) and 
that government or government controlled entities such as NASA always retain 
ownership no matter where the debris lands.

Barring any specific statute or regulation that I am unaware of, I would make 
an educated guess that if the Space-X mission was private, the landowner owns 
the fall; however, if the Space-X mission was performed or funded pursuant to a 
government contract, then the government retains ownership of the debris as the 
mission would be governmental, but executed by a contractor, i.e., Space-X.   

The government’s involvement, or lack thereof, in the mission would be the 
determining factor.  
 
 In practical terms, if the FBI shows up at your door,  I would hand it over 
under protest, but not resistance; if Elon Musk or his minions show up, the 
price of your piece just went way up.

Before buying or selling a piece, it would behoove you to do some due diligence 
on determination of the mission and under whose funding or control it was 
carried out. 

 The fact (if that is the case) that neither the government nor Space-X 
descended upon the debris field to recover the pieces is immaterial if it 
happens to be a government mission - the government never loses its ownership 
in anything, its interests must be granted by conveyance, regulation (e.g., 
public land meteorite finds) or by operation of law (the last less common than 
confirming Venusian meteorites).

Final thought, Mr. Musk is a cagey fellow and rarely misses a trick.  It is 
entirely possible he has wrangled the institution of some governmental 
regulation that grants Space-X permanent ownership & the right of possession of 
any and all materials, space ship or otherwise, that he launches towards the 
heavens.  (Probably would be found in Federal Register.)

 Legal research is in order, which is much cheaper than defending a lawsuit or 
criminal charges later.
And, yes, I know lawyers are killjoys.

Keith Lemons 
J.D., 1978, Baylor [Sic’em, Bears!] University

Sent from my iPhone
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[meteorite-list] Washington SpaceX fall event

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

I've posted some data on the Washington debris fall from last 26 March.  Radar 
signatures from this event persist for about two hours after the event, and 
some early-arriving signatures appear to be massive objects.  The strewn field 
lies along a line which covers most of the state and appears along a line which 
roughly connects Yakima and Spokane.

https://ares.jsc.nasa.gov/meteorite-falls/events/yakima-wa

Cheers,
Marc Fries
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Re: [meteorite-list] [EXTERNAL] Meteorite-list Digest, Vol 222, Issue 24

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

AMS reports four significant fireballs over the weekend: 
https://amsmeteors.org/2021/03/four-fireballs-spotted-during-the-week-end/ 

I checked the three stateside events on NEXRAD radar and couldn't find anything 
convincing.  The Pennsylvania one does show up in GLM imagery, in the GOES-16 
satellite image at 04:20 UTC.  Radar tells the same story I've been left with 
many times, though - there's a few pixels here and there that might be 
something, but its not enough to tell a consistent story.  

I'll insert my usual caveat - a small meteorite fall may slip past the radars 
undetected.  There are a few examples, such as the New Orleans fall which was 
evidently a single stone.

Cheers,
Marc Fries 

-Original Message-
From: Meteorite-list  On Behalf Of 
meteorite-list-requ...@meteoritecentral.com
Sent: Monday, March 22, 2021 12:31 AM
To: meteorite-list@meteoritecentral.com
Subject: [EXTERNAL] Meteorite-list Digest, Vol 222, Issue 24

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Contents of Meteorite-list digest..."


Today's Topics:

   1. Meteorite Picture of the Day (valpar...@aol.com)
   2. Fireball on Eastern Cuba (yasmani.ceba...@nauta.cu)
   3. Fwd: For your entertainment - Bringing you Mars rocks
  (Kevin Kichinka)


--

Message: 1
Date: Sun, 21 Mar 2021 00:35:55 -0700
From: 
To: 
Subject: [meteorite-list] Meteorite Picture of the Day
Message-ID: <3AB1C5A8B76A456787046FA0A8F388ED@s10718094116>
Content-Type: text/plain

Today''s Meteorite Picture of the Day: NWA 8310

Contributed by: Paladino Vincenzino

https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.tucsonmeteorites.com%2Fmpodmain.asp%3FDD%3D03%2F21%2F2021data=04%7C01%7Cmarc.d.fries%40nasa.gov%7C22ce962df16242c8993b08d8ecf3cf77%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637519879197351727%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000sdata=ygqneI7J4PV0dU7%2F4XKQ%2FQL8tk8Yx2B1zGxa2MwG58A%3Dreserved=0


--

Message: 2
Date: Sun, 21 Mar 2021 12:03:50 -0400
From: yasmani.ceba...@nauta.cu
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Fireball on Eastern Cuba
Message-ID:
<20210321120350.horde.zc2xhaqzgr9n5tp2vsfq...@webmail.nauta.cu>
Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes


Hello friends,
I imagine many of you must have seen the increase on facebook, twitter, etc. of 
several post including fake photos about a "meteorite on eastern Cuba". No 
meteorite has been recovered, it was just a fireball.
I have the data, but I need a fireball expert to help me better interpret the 
data to prepare an explanatory note. Please direct inbox, thanks!



--

Message: 3
Date: Sat, 20 Mar 2021 16:28:41 -0600
From: Kevin Kichinka 
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Fwd: For your entertainment - Bringing you
Mars rocks
Message-ID:

Content-Type: text/plain; charset="utf-8"

TeamMeteorite:

Perseverance on site. Super Hi-Def. Explanatory. I'll bet that you can't watch 
it just once (Good music, too.)  ?

 
https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DwxSOx2DoFN8data=04%7C01%7Cmarc.d.fries%40nasa.gov%7C22ce962df16242c8993b08d8ecf3cf77%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637519879197351727%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000sdata=cUzvOvdCDlQhrRzGwYJvCSDe4MAU%2BikoYtUfOmav7CQ%3Dreserved=0

The Red Planet remains  N x NW of the Pleiades.

MARSROX
-- next part --
An HTML attachment was scrubbed...
URL: 

Re: [meteorite-list] Vermont event

[Matson, Rob D. via Meteorite-list]

Hi Marc: I looked yesterday, but also came up empty. Checked both Burlington 
and Portland radars. There are the usual transient blips in the general area of 
the AMS-triangulated track, but nothing that unambiguously screams meteorite 
fall.  --Rob

From: Meteorite-list  On Behalf Of 
Fries, Marc D. (JSC-XI211) via Meteorite-list
Sent: Wednesday, March 10, 2021 8:04 AM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Vermont event

Try as I might, I can't find radar signatures to go with the recent event in 
Vermont.  Has anyone had any luck with it?

Cheers,
Marc Fries
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[meteorite-list] Vermont event

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Try as I might, I can't find radar signatures to go with the recent event in 
Vermont.  Has anyone had any luck with it?

Cheers,
Marc Fries
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[meteorite-list] Fun new paper on finding meteorites with drones

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Presumably of interest...

https://onlinelibrary.wiley.com/doi/pdf/10./maps.13593
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Re: [meteorite-list] Galactic Analytics content?

[Matson, Rob D. via Meteorite-list]

Concur – I sometimes go months between check-ins at FB; Met-List posts I see 
immediately.  –Rob (also in SoCal)

From: Meteorite-list  On Behalf Of 
Michael Mulgrew via Meteorite-list
Sent: Monday, January 11, 2021 12:30 PM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: Re: [meteorite-list] [EXTERNAL] Re: Galactic Analytics 
content?

As someone who never has and never will use FB, I welcome other avenues of 
information disbursement.

-Michael in so. Cal.
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Re: [meteorite-list] [EXTERNAL] Re: Galactic Analytics content?

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  Thank you all for your feedback.  I've been talking with folks on 
various platforms today, and it seems I've found a good option.  There is a new 
meteorite-related, international, non-profit organization standing up soon.  
They've agreed to host GA-style information including images with free and open 
access.  What I'd like to do, if it's alright with y'all, is to host content on 
that platform and send links to the Met List.  That way y'all can share in the 
content, the information remains freely available, and this also solves the 
problem of how to share images (strewn fall calculations, images of radar 
signatures, etc.).
  This new organization is going to make its debut online in about 
a month and will have their own announcements - I don't want to steal their 
thunder by saying more than that now. It looks like this is going to work well.

  If any new falls occur between now and then, well I'm working on 
that.  I'll find a way to disseminate that information.

Cheers,
Marc

From: Swan Valley Bushcraft 
Sent: Monday, January 11, 2021 11:14 AM
To: Fries, Marc D. (JSC-XI211) 
Cc: meteorite-list@meteoritecentral.com
Subject: [EXTERNAL] Re: [meteorite-list] Galactic Analytics content?

Hello Marc

This Meteorite List has terms of service as well, and has removed individuals 
based upon their postings. It would be a shame if our precious meteorite list 
was dragged into an ideological debate as we have struggled to keep the List on 
topic in the past.

Even though this List is not a democracy, I vote no on your proposal as briefly 
described.

Announcements are fine, I believe, as long as they abide by the TOS, but an 
increased traffic flow is concerning if it deviates from the spirit and purpose 
of this List. Perhaps more clarification about your proposal is needed.

Best wishes

Martin

On Mon, Jan 11, 2021 at 10:01 AM Fries, Marc D. (JSC-XI211) via Meteorite-list 
mailto:meteorite-list@meteoritecentral.com>>
 wrote:
Howdy all

  For the past several years I've run Galactic Analytics on 
Facebook.  It has been a freely available forum to discuss meteors and 
meteorite falls, and a convenient site for me to disseminate radar data showing 
potential meteorite falls.  When I started this, Facebook was an open forum for 
all participants. Unfortunately, Facebook has recently enacted policies which 
restrict the uncensored flow of content between one end of the political 
spectrum in particular.  I cannot support censorship, as it is a form of 
oppression.  I have shut down Galactic Analytics (but will retain old content 
on Facebook for the time being) and am looking for a new, open venue to host 
content.
  Most of the options include starting up some new platform, which 
has the drawback of adding yet another source for interested parties to keep 
track of.  However it occurred to me that we can use this as an opportunity to 
consolidate sources.

  What would you all think if I were to start posting GA content on 
the Meteorite List?  When an event occurs I can post it here.  I will have to 
find a server to host images but that is do-able.  Be advised that it may 
increase MetList traffic by a sizable fraction.

  What do you think?

Cheers,
Marc Fries
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Ar

[meteorite-list] Galactic Analytics content?

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

  For the past several years I've run Galactic Analytics on 
Facebook.  It has been a freely available forum to discuss meteors and 
meteorite falls, and a convenient site for me to disseminate radar data showing 
potential meteorite falls.  When I started this, Facebook was an open forum for 
all participants. Unfortunately, Facebook has recently enacted policies which 
restrict the uncensored flow of content between one end of the political 
spectrum in particular.  I cannot support censorship, as it is a form of 
oppression.  I have shut down Galactic Analytics (but will retain old content 
on Facebook for the time being) and am looking for a new, open venue to host 
content.
  Most of the options include starting up some new platform, which 
has the drawback of adding yet another source for interested parties to keep 
track of.  However it occurred to me that we can use this as an opportunity to 
consolidate sources.

  What would you all think if I were to start posting GA content on 
the Meteorite List?  When an event occurs I can post it here.  I will have to 
find a server to host images but that is do-able.  Be advised that it may 
increase MetList traffic by a sizable fraction.

  What do you think?

Cheers,
Marc Fries
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Re: [meteorite-list] Who sold their collection to a pawn shop?

[Matson, Rob D. via Meteorite-list]

Seems to me that one possible explanation has been danced around: that the 
collection owner might have died (perhaps unexpectedly), and the 
spouse/family/estate knew little about meteorites. If so, it would illustrate 
the importance of having a living will with clear instructions for “exotic” 
items about which family members may be completely unknowledgeable.  --Rob

From: Meteorite-list  On Behalf Of 
Michael Mulgrew via Meteorite-list
Sent: Tuesday, December 1, 2020 11:12 AM
To: bill kies 
Cc: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: Re: [meteorite-list] Who sold their collection to a pawn 
shop?

TKW reported in the MetBull is often inaccurate, as addition masses found after 
the classification are seldom reflected in the MetBul.

-Michael in so. Cal.
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Re: [meteorite-list] Group hunt Willcox Playa dry lake near Tucson Feb 3rd/5th

[Matson, Rob D. via Meteorite-list]

I’ve never been to Willcox when it *wasn’t* a bog. On my first visit, I arrived 
on the lakebed around
midnight and did a little poking around with a flashlight in the sub-freezing 
temperatures before
sleeping in my vehicle. Got up at dawn and started crunching around on the 
frozen ground. By
about 8 am, the sun was high enough that it started thawing the permafrost, and 
I quickly realized
I was in very real danger. I barely made it off the “gumbo,” and was very happy 
I had made the
decision to park close to the edge of the playa! Definitely not my favorite 
place.  --Rob

From: Meteorite-list  On Behalf Of 
Gmail via Meteorite-list
Sent: Friday, January 31, 2020 4:23 PM
To: CARL ESPARZA 
Cc: Michael Farmer via Meteorite-list ; 
Michael Farmer ; Raymond Borges 
Subject: EXTERNAL: Re: [meteorite-list] Group hunt Willcox Playa dry lake near 
Tucson Feb 3rd/5th

We just drove through today. Still a lake.
Mendy Ouzillou
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[meteorite-list] Happy Birthday Sutter's Mill

[Matson, Rob D. via Meteorite-list]

Hi All -- if I'm not mistaken, the Sutter's Mill fall occurred 7 years ago 
today. Hard to believe
it's been that long already!  --Rob
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[meteorite-list] OT Sad news: Notre-Dame is gone

[Matson, Rob D. via Meteorite-list]

Paris is having a tough year: fire has essentially destroyed the Cathedral of 
Notre-Dame. The towering
central spire collapsed just hours ago:

https://www.cnbc.com/2019/04/15/paris-notre-dame-cathedral-on-fire-reuters.html

--Rob
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[meteorite-list] Osceola

[Matson, Rob D. via Meteorite-list]

Happy 3-year anniversary, Osceola, Florida!
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[meteorite-list] Mars Insight landing

[Matson, Rob D. via Meteorite-list]

Congrats to NASA/JPL and the Mars Insight team for the successful touchdown on 
Mars
just a few moments ago (ignoring special relativity)!  --Rob
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Re: [meteorite-list] possible Alabama lunar meteorite fall

[Matson, Rob D. via Meteorite-list]

Hi Anne -- Bill beat me to it. Basically you have a small asteroid in an orbit 
that
is dynamically difficult (but not impossible) to achieve without having 
originated
in the earth-Moon system. The aphelion was well inside the orbit of Mars, so the
only way it could get from the Main Belt to the orbit that it occupied 
immediately
prior to hitting the earth is via past earth/Moon encounters. The easier path is
via lunar ejecta following a NEO impact.  --Rob

From: Bill Cooke [cook...@comcast.net]
Sent: Sunday, November 18, 2018 2:18 PM
To: Anne Black
Cc: Matson, Rob D. [US-US]; meteorite-list@meteoritecentral.com
Subject: EXTERNAL: Re: [meteorite-list] possible Alabama lunar meteorite fall

I can answer this, as we got enough data from our meteor cameras to compute an 
orbit. It was very similar to that of Earth (semi major axis of 1 AU, 
eccentricity < 0.1) with an inclination within 2 standard deviations of that of 
the Moon. This means we are either dealing with an evolved orbit (most likely) 
or lunar ejecta (much less likely, but not impossible).

Bill Cooke
NASA Meteoroid Environment Office
(Sent from my iPad)

> On Nov 18, 2018, at 4:01 PM, Anne Black via Meteorite-list 
>  wrote:
>
> Randy, Rob,
>
> What makes you think that it could be a Lunar?
> Yes, I read the article, and it is just mentioned as a "possibility".
>
> Your opinions?
>
> Anne Black
> IMPACTIKA.com
> impact...@aol.com
>
>
>
> -Original Message-
> From: Matson, Rob D. via Meteorite-list 
> To: meteorite-list@meteoritecentral.com 
> Sent: Sun, Nov 18, 2018 12:31 pm
> Subject: Re: [meteorite-list] possible Alabama lunar meteorite fall
>
>
> Hi Randy,
>
> It hadn't been mentioned yet on the Met-List. I worked this fall last week 
> (unaware
> that Marc Fries had already done so), so the fortunate result of the 
> independent
> analysis is that two people came up with the same answer and the exact same
> radar returns. (I also analyzed the Carrollton, AL, seismic station data 
> which has
> an unmistakable sonic boom just 106 seconds after the terminal burst of the
> bolide.) I'm 100% sure these returns are associated with the fall since they 
> are
> practically colocated with the seismometer.
>
> Upper atmospheric winds were high at the time of the fall -- jet stream was
> about 125 knots blowing almost due east. This is why the Doppler radar
> returns subsequent to the initial high-altitude westerb return at 15 km are
> displaced to the east of it. At the altitudes below the 2.5-km altitude radar
> cluster, the winds were below 30 knots and blowing more to the southeast
> or ESE. This is supported by the small southeastward shift from the central,
> linear-looking return, and the wider cluster to its lower right that was
> scanned less than a minute later. The first place I would search would be
> the southeast edge of the 2.5-km altitude cluster.
>
> Unfortunately, this is a tough search area.  --Rob
> 
>
> From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf 
> of Korotev, Randy via Meteorite-list [meteorite-list@meteoritecentral.com]
> Sent: Sunday, November 18, 2018 8:26 AM
> To: meteorite-list@meteoritecentral.com
> Subject: EXTERNAL: [meteorite-list] possible Alabama lunar meteorite fall
>
> If there has been discussion of this on the List, I missed it
>
> https://ares.jsc.nasa.gov/meteorite-falls/
>
> ~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+
> Randy L. Korotev
> Research Professor, retired
> Department of Earth & Planetary Sciences
> Washington University in Saint Louis
> __
>
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Re: [meteorite-list] possible Alabama lunar meteorite fall

[Matson, Rob D. via Meteorite-list]

Hi Randy,

It hadn't been mentioned yet on the Met-List. I worked this fall last week 
(unaware
that Marc Fries had already done so), so the fortunate result of the independent
analysis is that two people came up with the same answer and the exact same
radar returns. (I also analyzed the Carrollton, AL, seismic station data which 
has
an unmistakable sonic boom just 106 seconds after the terminal burst of the
bolide.) I'm 100% sure these returns are associated with the fall since they are
practically colocated with the seismometer.

Upper atmospheric winds were high at the time of the fall -- jet stream was
about 125 knots blowing almost due east. This is why the Doppler radar
returns subsequent to the initial high-altitude westerb return at 15 km are
displaced to the east of it. At the altitudes below the 2.5-km altitude radar
cluster, the winds were below 30 knots and blowing more to the southeast
or ESE. This is supported by the small southeastward shift from the central,
linear-looking return, and the wider cluster to its lower right that was
scanned less than a minute later. The first place I would search would be
the southeast edge of the 2.5-km altitude cluster.

Unfortunately, this is a tough search area.  --Rob

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
Korotev, Randy via Meteorite-list [meteorite-list@meteoritecentral.com]
Sent: Sunday, November 18, 2018 8:26 AM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] possible Alabama lunar meteorite fall

If there has been discussion of this on the List, I missed it

https://ares.jsc.nasa.gov/meteorite-falls/

~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+~+
Randy L. Korotev
Research Professor, retired
Department of Earth & Planetary Sciences
Washington University in Saint Louis
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Re: [meteorite-list] Meteorites Recovered From Ocean Bottom

[Matson, Rob D. via Meteorite-list]

I do wish Marc and NASA every success in trying to pull this off. What 
surprises me is
that a similar effort wasn't undertaken for the fall over Lake Michigan last 
year, just
offshore from Wisconsin. That one should be FAR easier to recover -- the water 
is
clear (thanks to the zebra mussels), the depth minimal (<250 feet), the bottom
sandy rather than silt and muck, and little to no waves to contend with.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Sterling K. Webb via Meteorite-list
Sent: Friday, July 06, 2018 1:12 AM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Meteorites Recovered From Ocean Bottom

List,

It seems that Marc Fries 
(former list member) has 
recovered fragments from 
the fireball that passed over 
Seattle in March of this 
year... from the bottom of 
the Pacific!

"Against all odds, NASA 
may have actually found 
a meteorite on the bottom 
of the ocean:"


They say:
"...researchers will examine 
the fragments more closely 
and hope to conclusively 
determine that they are 
indeed from space. If the 
rocks are indeed extra-
terrestrial, it will mark 
an incredible accomplish-
ment for the expedition 
team."

I'll say!


Sterling K. Webb

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[meteorite-list] Article About A Chinese woman who hunts for meteorites in the Gobi

[Matson, Rob D. via Meteorite-list]

Hi All,

Don't know if this story has been posted here before -- sounds like a pretty 
successful young lady:



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Re: [meteorite-list] Toxic Giant Hogweed Spreading - Warning to Meteorite Collectors

[Matson, Rob D. via Meteorite-list]

Hi Paul: that plant sounds like it was harvested from the planet in "The Way to 
Eden"
(Star Trek original series, season 3)... ;-)  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Paul via Meteorite-list
Sent: Monday, July 02, 2018 3:20 PM
To: Meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Toxic Giant Hogweed Spreading - Warning to 
Meteorite Collectors

Although the below article do not specifically mention
meteorite collecting, it discusses a nasty, hazardous
plant, that meteorite collectors and anyone either collecting,
working or playing in the outdoors need to be aware of
and avoid.

'Horror Plant' causes 3rd-degree burns, blindness,
is spreading in Upstate NY (photos)
By Ben Axelson | baxel...@nyup.com June 26, 2018
https://www.sciencealert.com/invasive-toxic-giant-hogweed-burns-skin-blindness-virginia-clarke-county
https://www.newyorkupstate.com/expo/news/erry-2018/06/f2e509cfd11171/horror_plant_causes_3rddegree.html
https://nypost.com/2018/06/17/this-plant-causes-3rd-degree-burns-permanent-blindness/

Yours,

Paul H.
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[meteorite-list] Minor planet impactor witnessed over Botswana

[Matson, Rob D. via Meteorite-list]

Hi All,

Catalina Sky Survey has done it again -- discovery of an impacting NEO, this 
time
just 8 1/2 hours prior to impact. CSS discovered the NEO at 8:14 UT today (1:14 
am
MST), and a bright vapor trail was seen to the north of observer Dhiraj S in 
Botswana
(24° 37' 21'' S, 25° 54' 57'' E) at 16:44 UT, consistent with both the time and 
location
of the asteroid's predicted trajectory:

http://www.amsmeteors.org/members/imo_view/report/142364

Bill Gray's time/location plot for predicted impact:

https://projectpluto.com/temp/z.png

Yellow cross-hairs are the observer's location. Asteroid size pretty similar to 
that of
impactor 2008 TC3 that ultimately resulted in meteorites recovered from Almahata
Sitta in northern Sudan. Unfortunately, due to the short time between discovery 
and
impact, very few observations (12?) made of the impacting body (temporary 
designation
ZLAF9B2) on this occasion. Compare that with almost 800 observations of 2008 
TC3.

--Rob



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Re: [meteorite-list] Tiangong-1 decay predictions

[Matson, Rob D. via Meteorite-list]

Indeed, and a number of which you have first-hand experience with!  I find it 
entertaining
that reentry could occur over Sudan -- possibly less than 100 miles from the 
Almahata
Sitta fall site.  --Rob

From: Michael Farmer [m...@meteoriteguy.com]
Sent: Sunday, April 01, 2018 12:12 PM
To: Matson, Rob D. [US-US]; Meteorite Mailing List
Subject: EXTERNAL: Re: [meteorite-list] Tiangong-1 decay predictions

All wonderful places

Michael Farmer
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Re: [meteorite-list] Tiangong-1 decay predictions

[Matson, Rob D. via Meteorite-list]

Hi John,

"Right now: its speed is 4.86mi/s, altitude 87.63 and orbit period is 88mins."

Keep in mind that the altitude is quite variable since the orbit is elliptical 
and the
earth's radius varies with latitude. Orbital perigee is currently occurring 
close to
the northern apex of the orbit (on the ascending node); however, minimum
altitude is occurring on the ascending node at much lower (northern) latitudes.

Earth's atmosphere is quiescent right now due to very low solar activity. This
is why the station has stayed longer in orbit than expected. Even over the
last couple days, the predicted time of reentry has shifted later and later; on
Friday it was 7:15 UT +/- 20 hours, and as the hours remaining have dwindled
the predictions evolved to:

10:30 UT +/- 16 hours
14:00 UT +/- 16 hours
16:15 UT +/- 9 hours
23:30 UT +/- 7 hours
4/2 02:00 UT +/- 7 hours
4/2 00:18 UT +/- 2 hours

Decay can really occur at any time; the odds slightly favor the northern 
hemisphere
because that's where both perigee and minimum altitude are currently occurring.

--Rob
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[meteorite-list] Tiangong-1 decay predictions

[Matson, Rob D. via Meteorite-list]

Hi All -- I sent this to one of my Yahoo groups and figured there would also be
interest here. Below are my favored orbital segments for the imminent reentry
of the Chinese space station Tiangong-1, based on the assumption that reentry
will occur on an ascending node near minimum satellite altitude (distinct from
perigee). That is not to say these are the only possible places for entry -- 
just
the ones that are favored based on the assumption that reentry will occur near
or shortly after the time of each orbit's minimum altitude.

Unfortunately, based on current predictions, reentry over the U.S. is not
possible (nor Australia or New Zealand). Asia, northern Africa and the Middle
East are the most likely land locations. Greece is the only country in Europe
with a pass during the decay window.

4/1/2018
22:00-22:02  Gulf of Aden
22:02-22:05  SE Yemen, Oman
22:05-22:06  Gulf of Oman
22:06-22:09  Pakistan
22:09-22:10  Jammu and Kashmir

23:22-23:24  Gabon, NW corner of Congo
23:24-23:27  SE corner of Cameroon, Central African Republic
23:27-23:31:30  Sudan
23:31:30-23:32  Red Sea
23:32-23:34:30  Saudi Arabia
23:34:30-23:35  Kuwait
23:35-23:38  Iran
23:38-23:39  Turkmenistan

4/2/2018
00:37-00:52  South Atlantic Ocean
00:52-00:53  Ivory Coast
00:53-00:54  Ghana
00:54-00:55  Northern Togo, northern Benin, SE corner of Burkina Faso
00:55-00:59  Niger
00:59-01:02  Extreme NW Chad, Libya
01:02-01:02:30  NW corner of Egypt
01:02:30-01:04:30  Eastern Mediterranean Sea
01:04:30-01:06  Syria, extreme SE Turkey
01:06-01:07:30  Extreme western Iran, southern Azerbaijan (passes just south of 
Baku)
01:07:30-01:08  Caspian Sea
01:08-01:09:30  Turkmenistan
01:09:30-01:10:30  South Kazakhstan

02:09:30-02:16  Brazil
02:16-02:23  Atlantic Ocean
02:23-02:23:30  NW Senegal
02:23:30-02:26  Mauritania
02:26-02:26:30  NW Mali
02:26:30-02:30  Algeria
02:30-02:31  Tunisia
02:31-02:33  Mediterranean Sea
02:33-02:34:30  Greece (NW of Athens), Aegean Sea
02:34:30-02:36  Northern Turkey (SW of Istanbul)
02:36-02:37:30  Black Sea
02:37-02:38  Georgia
02:38-02:38:30  Chechnya, Dagestan Republic
02:38:30-02:39  Caspian Sea
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[meteorite-list] Chelyabinsk

[Matson, Rob D. via Meteorite-list]

Happy 5-year anniversary, Chelyabinsk!  Time flies... --Rob
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[meteorite-list] Spurious extinction "periodicity"

[Matson, Rob D. via Meteorite-list]

It was my understanding that the 26- or 27-million-year periodicity idea was
discredited some time ago as not being statistically significant. In any case,
no “Nemesis” red- or brown-dwarf companion star (presumably in a highly
elliptical orbit) has ever been found, and if one existed within even 10 
lightyears
of the sun, WISE would have found it.  --Rob
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[meteorite-list] Happy Anniversary

[Matson, Rob D. via Meteorite-list]

Happy 2-year anniversary for the Osceola, Florida fall!  --Rob
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Re: [meteorite-list] Search is on for meteorite in metro Detroit

[Matson, Rob D. via Meteorite-list]

What's baffling is why everyone is looking in Macomb County. It should be public
knowledge by now where the fall occurred, and Macomb County is over 35 miles 
away
from that location.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Paul via Meteorite-list
Sent: Thursday, January 18, 2018 2:53 PM
To: Meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Search is on for meteorite in metro Detroit


Fake meteorites abound as hut for fragments intensifies WXYZ-TV Detroit, 
Channel 7, January 18, 2018 https://www.youtube.com/watch?v=HPbc6XnnBYY

"Fake meteorites are turning up as people search for the real deal following 
the recent spotting of a meteor in the skies over Michigan."

Michigan Meteor: How do you know if you've found a meteorite?
WXYZ-TV Detroit,  Channel 7, January 17, 2018 
https://www.youtube.com/watch?v=i-7Ja90d0_Y

Search is on for meteorite in metro Detroit WXYZ-TV Detroit,  Channel 7, 
January 17, 2018 https://www.youtube.com/watch?v=jWYbhLDcxiA

"People are out in Macomb Township on Wednesday afternoon in hopes to find 
meteorites from the meteor that blew up over the skies of Michigan on Tuesday 
night."

Hunting for meteorites on Michigan soil
WXYZ-TV Detroit,  Channel 7, January 17, 2018 Published on Jan 17, 2018
https://www.youtube.com/watch?v=vrnzFtGSgp8

Yours,

Paul H.
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[meteorite-list] Michigan fall

[Matson, Rob D. via Meteorite-list]

One of the finds Robert is holding doesn't look that small to me -- looks over
100 grams based on the size. Very nice!  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Bigjohn Shea via Meteorite-list
Sent: Thursday, January 18, 2018 11:25 AM
To: Les to Rovy; Michael Farmer via Meteorite-list; Meteorite Mailing List
Subject: EXTERNAL: Re: [meteorite-list] Michigan Meteor

They found a few small specimens last I heard. 
Did they find the main mass?

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Re: [meteorite-list] Seismic Event w/ Bolide?

[Matson, Rob D. via Meteorite-list]

Hi Greg – Chris Peterson summed it up nicely. I would venture to guess that 
bolides that
lead to meteorites on the ground more often than not generate detectable seismic
(i.e. acoustic) signatures. Of the U.S. recovered falls since 2010, at the 
times those
events occurred I found seismic evidence for Lorton (2 stations), Mifflin, 
Battle
Mountain, Creston (4 stations), Osceola, and Dishchii’bikoh (4 stations). (I’m 
sure
the Novato, CA, fall also led to seismic returns on many stations, but I never
analyzed seismic on that event – probably should do so for completelness.) The
Wolcott, CT, event on April 19, 2013, also produced a sonic boom signature but
no meteorites were ever recovered. There have probably been close to a dozen
other bolides in recent years that I found on seismic, but meteorites weren’t
recovered.  --Rob

From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Greg Redfern via Meteorite-list
Sent: Wednesday, January 17, 2018 6:22 AM
To: Meteorite Mailing List
Subject: EXTERNAL: [meteorite-list] Seismic Event w/ Bolide?

List,

Has there been other bolide events that have had a seismic correlation? It is 
being reported that USGS recorded a 2.0 magnitude seismic event with this 
morning's Michigan et al bolide event.

I would think that would have to equate to enough kinetic energy upon impact of 
the main body to create a crater of some size.

Thoughts from experts like Mr. Matson ;-)

Thanks.

Sky Guy Greg

Greg Redfern
NASA JPL Solar System Ambassador
Daily Blog
Twitter
WTOP
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[meteorite-list] Seismic signature for Michigan bolide last night

[Matson, Rob D. via Meteorite-list]

Hi All,

By way of follow-up to my prior post, a significant seismic signature for the 
Michigan
event can be found on the US.AAM Ann Arbor seismic station at 01:10:16 UT on
17 January 2018. I've created the following link for you to display the 
waveform:



--Rob
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Re: [meteorite-list] First recorded visit to this solar system by an interstellar object

[Matson, Rob D. via Meteorite-list]

Hi Mike,

It is indeed an intriguing interloper, with much speculation on MPML as to its
possible origin and the dynamics of its ejection from its original star system.
Its spectral characteristics (admittedly limited spectral resolution so far) 
seem
more consistent with an asteroid than a comet, though there is no real
dividing line between an asteroid and an inactive comet -- more a continuum
between the two. Suffice to say the object is "red" with no strong spectral
peaks or troughs in the visible band.

One small correction to your post below -- the object certainly originated
in our galaxy, or one of the dwarf galaxies that is gravitationally bound to it
(e.g. the Canis Major Dwarf Galaxy). There has been insufficient time for the
body to travel intergalactic distances, even from as close as Andromeda.
Unfortunately, we will never know the identity of the star system from which
it originated.  --Rob

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
Galactic Stone & Ironworks via Meteorite-list 
[meteorite-list@meteoritecentral.com]
Sent: Sunday, October 29, 2017 5:30 AM
To: Meteorite List
Subject: EXTERNAL: [meteorite-list] First recorded visit to this solar system 
by a comet-like interstellar object

First recorded visit in this solar system by a visiting interstellar
object of unknown origin and composition. This comet-like object is
moving at a very high rate of speed (44 km/sec) and is entering our
cosmic neighborhood from an unusual angle that is nearly perpendicular
to the ecliptic.

This object does not come from our Asteroid Belt, Kuiper Belt, or Oort
Cloud. It is an interloper from the vast empty space between the
galaxies and stars. This comet-like object has streaked through our
solar system like a rifle shot and is now continuing on it's journey
through deep space in the direction of the Pegasus constellation.

Unlike most comets or asteroids, we Earthlings will never see this
strange visitor again, as it's speed and trajectory will carry it out
and away from our solar system into the distant reaches of
interstellar space.

Link - 
http://earthsky.org/space/a2017u1-comet-asteroid-interstellar-beyond-solar-system

--
---
Galactic Stone & Ironworks : www.galactic-stone.com
Instagram : www.instagram.com/galacticstone
Twitter : www.twitter.com/galacticstone
---
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[meteorite-list] Dubai meteor = 2017-056B Progress Rocket Body

[Matson, Rob D. via Meteorite-list]

Hi Tom/List -- I'm betting this was the reentry of 2017-056B: the Progress MS07 
ISS
resupply rocket body. It was predicted to reentry today (this evening) at 15:53 
UTC
+/- 2 hours. The ground track took it right over the Persian Gulf going 
northwest
to southeast on its descending node.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Tommy via Meteorite-list
Sent: Monday, October 16, 2017 11:12 AM
To: meteorite-list@meteoritecentral.com
Subject: EXTERNAL: [meteorite-list] Video: Meteors spotted in Dubai night sky

https://www.khaleejtimes.com/nation/dubai/meteors-spotted-in-dubai-night-sky-1

Regards!

Tom

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[meteorite-list] BC fall on 5 September 2017 (UT) (late 4 September local)

[Matson, Rob D. via Meteorite-list]

Hi Paul,

I think it ended up quite a bit south of Meadow Creek.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Paul Gessler via Meteorite-list
Sent: Wednesday, September 06, 2017 4:07 PM
To: meteorite-list
Subject: EXTERNAL: [meteorite-list] British Columbia Meteorite


To any and all hunters and dealers coming to Canada (Meadow Creek) area If you 
should find any material and need to deposit it somewhere while awaiting 
official export permits please let me know as I  can provide this service free 
of charge for however long it might take to clear.

I have been in the meteorite hunting community since 1990 and now live in 
Victoria BC Have a huge collection of meteorites and very secure facility to 
store them.

Just putting it out there for some of you lucky bastards.
Contact me off list
cetu...@shaw.ca

Sincerely

Paul Gessler 
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[meteorite-list] Daylight fireball, TX-OK 18 Apr 2017

[Fries, Marc D. (JSC-XI211) via Meteorite-list]

Howdy all

There is a recent event in the AMS logs for a ~1 PM fireball.  
This event seems to have passed directly over DFW headed NE.  It looks to me 
like the ground track was rather long, as reports from DFW spotted the fireball 
both SW and NE of DFW.

http://www.amsmeteors.org/members/imo_view/event/2017/1407

There is an interesting radar return in the KSRX (Fort Smith, 
AR) 18:12 UTC radar data, in the 2.4 degree sweep.  It is a very “bright” 
reflection for a meteorite fall (if that is what it is), with a strong 
turbulence signature and a “flat” spectral width* that are favorable for a 
meteorite fall interpretation.  This return lies exactly along the ground track 
ID’d by eyewitnesses, just SW of the town of Hugo, OK.  There are four other 
radar returns that might also be associated with this event, in that they line 
up along the AMS ground track.  I will post information on the Galactic 
Analytics page on Facebook, along with maps.

My read on this is – the KSRX return outside Hugo is consistent 
with the fall of a small number of relatively large objects, of sufficient size 
to generate a strong turbulent wake in their path.  I’m not sure about the 
other radar returns; they could just be random noise.

Cheers,
Marc Fries

*Spectral width is a measure of the range of object sizes in a given radar 
image pixel, and meteorite falls usually have low SW values of about the same 
value; or “flat” SW values.
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Re: [meteorite-list] August eclipse in Wyoming

[Matson, Rob D. via Meteorite-list]

Hi Tracy,

I will most likely be watching from Grand Teton National Park (along with 
probably ten
thousand other people!), with the flexibility to head east-southeast if morning 
clouds
threaten to spoil the show. The centerline actually passes directly over 
Jackson Hole
Airport, and just a couple kilometers north of Teton Village (where I was 
skiing just
last week).  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of tracy latimer via Meteorite-list
Sent: Tuesday, February 28, 2017 9:56 AM
To: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] August eclipse in Wyoming

This will be a big event for astronomy buffs across the US.  I managed to snag 
a room at the Old Faithful Inn for the 4-5 days around the event, and am 
planning to drive down into Grand Tetons National Park that day for best 
viewing, about 100 miles.  The Bad Astronomer set up one of his Science Ranch 
Getaways along the path of totality for that period; it sold out within 2 days 
of being posted.  Our tame astrophysicist has a family cabin in West 
Yellowstone, and has already declared his intent to camp there during the event.

Just because you can't make it to the Wyoming area during the eclipse doesn't 
mean you can't view it; the eclipse cuts a swath across the CONUS from Oregon 
to North Carolina.  Unless you are in the SW or NE corner of the US, you are 
probably no more than a day or two drive away from good viewing, weather 
permitting 

Best!
Tracy Latimer



From: Meteorite-list  on behalf of 
David Freeman via Meteorite-list 
Sent: Monday, February 27, 2017 9:31 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] August eclipse in Wyoming
  


Dear List;


Yes, I'm still around, just taking an extended vacation from being a pain in 
the postier.



August 21st. is a  total eclipse. It is causing the motels in Casper and Lander 
to be booked full already.
Rock Springs, (here where I am) is located about a hundred miles from good  
viewing at South Pass where it is over fifteen miles from the nearest lit light 
bulb.   It is expected to be 99% total from Pacific Springs rest area location 
on WY highway 28 at the afore mentioned South Pass.

Sweetwater County Travel and Tourism is planning on doing something, maybe some 
field trips, or ?


I will make a few more posts as the event comes along time wise.

 

With my regards,


David Freeman Rock Springs WY 82902 41.6°N 109.22°W (Elev. 6324 ft)  
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[meteorite-list] Lake Michigan bolide

[Matson, Rob D. via Meteorite-list]

Hi Bill -- tons of radar hits. Unfortunately, it's all 5 to 25 km offshore into 
Lake Michigan,
east of Cleveland, WI.  :-(  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of bill kies via Meteorite-list
Sent: Monday, February 06, 2017 10:26 AM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Meteor over Wisconsin

Is there any radar data yet?

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Re: [meteorite-list] Event reported over Eastern Oklahoma

[Matson, Rob D. via Meteorite-list]

Hi James -- checked this one this morning. Hawley, TX, allsky camera caught it 
very low on the
horizon at 12:14:05 UT (6:14:05 am CST), establishing an accurate time for the 
event. I didn't
find anything good on nearby seismographs, which is surprising given that they 
tend to be
more sensitive to such acoustic events than are humans. Also, nothing obvious 
on KSRX
Doppler. Haven't checked any of the other radars.  --Rob

From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of James Beauchamp via Meteorite-list
Sent: Monday, January 30, 2017 5:01 AM
To: meteorite-list@meteoritecentral.com
Cc: Dirk Ross
Subject: [meteorite-list] Event reported over Eastern Oklahoma

News media reporting green flash with sonics over Eastern Oklahoma.  
Approximately 06:30 AM Central.

Sadly, my camera is down for Maintenance  :(


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[meteorite-list] Sonic boom for East Coast Fireball 1/25/17

[Matson, Rob D. via Meteorite-list]

Sonic boom recorded for this event at 9:12:06 UT on 25 January 2017 at seismic 
station CO.BIRD
in Birdtown, Kershaw, SC (34.645 N, 80.4615 W).  --Rob

From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Me Teor via Meteorite-list
Sent: Wednesday, January 25, 2017 9:57 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] East Coast Fireball 1/25/17

probable event on the east coast :
Comment::"ended its journey in Uwharrie national forest."
Ryan Johnson5 hours ago
I saw this live last night it fell to the ground and was awesome to see. it 
ended its journey in Uwharrie national forest. actually made my cell phone go 
blank was very bright as if night changed to day in a snap but as if we had a 
blue sun it was like looking through a blue filter.. location not disclosed 
until i go look first.. sorry

https://youtu.be/7EFZyDfhQ0k

http://www.amsmeteors.org/members/imo_view/event/2017/270

Sami Makki
Matrix India
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[meteorite-list] South Carolina bolide on 25 January 2017

[Matson, Rob D. via Meteorite-list]

AMS event 270-2017 generated a sonic boom that was recorded at 9:12:06 UT on
25 January 2017 at seismic station CO.BIRD in Birdtown, Kershaw, SC (34.645 N, 
80.4615 W).
It was also recorded (much less strongly) by N4.Y57A in Sumter, SC (34.017 N, 
80.3915 W)
at 9:14:19 - 2 minutes 13 seconds later. These two seismic stations are 70 km 
apart,
suggesting the terminus was between the two of them and about 40 km closer to
CO.BIRD than to N4.Y57A.    --Rob

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[meteorite-list] Happy 1st Birthday, Osceola!

[Matson, Rob D. via Meteorite-list]

Doug's post reminded me -- hard to believe it's already been one year since the 
Osceola fall
into the swamps of northeast Florida!
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[meteorite-list] You know who

[Matson, Rob D. via Meteorite-list]

I call BS. Alternate spelling of well-known meteorite afficionado. No way would 
I click that URL link.

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
AL Mitorling via Meteorite-list [meteorite-list@meteoritecentral.com]
Sent: Friday, January 13, 2017 6:30 PM
To: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] He is back

Greetings,

Don't think this made it through so will try again.

http:// www. 
courthousenews.com/2012/04/23/45848.
 htm

On Fri, Jan 13, 2017 at 2:23 AM, AL Mitorling 
> wrote:
Hi Blake and all,

As Blake has said, you will have to watch this guy as he is dangerous. Do a 
search and you will find some of the previous problems mentioned on the 
meteorite list. There are also some legal documents online. Here is one: 
http://www.courthousenews.com/2012/04/23/45848.htm

All my best to everyone on the list.

--AL

On Fri, Jan 13, 2017 at 12:41 AM, Blake via Meteorite-list 
>
 wrote:
He is back! Curry that is.

I just re-joined the list again. A few years ago I was on to keep track of 
Curry. I dropped off because I’m not actually a part of the community (I’m just 
Blaine’s brother) and things seemed to have cooled down.

Unfortunately things have changed. A couple days ago he went to Quartzite and 
convinced the authorities to investigate (sorry Blaine told me the name of the 
person they went after but I don’t remember it right now). They came in to shut 
him down. Curry convinced them that anyone selling an NWA was supporting 
terrorism. They bought it. For now they are “investigating the situation”.

Curry is on his way to Tucson now (may already be there) and is going to try 
the same thing. The thing is he (and others) think he is a US superior court 
judge and his followers think they are continental us marshals. They think they 
have the right and obligation to carry out sentences against anyone one who 
disagrees with them (i.e. Curry’s rocks aren’t meteorites). Anyone selling an 
NWA is guilty of treason and therefore should be hanged. He has been on the 
road claiming that if he can do away with us (me and Blaine) that he will have 
billions of dollars to over throw the government. This guy is extremely 
dangerous and should be avoided. I can’t post pictures but I suggest all do 
some research on him (Steve curry montrose co) to come up with something.

If you see him, My recommendation is to not confront him and run away. Blaine 
has been monitoring his activities and his anger level is extremely high now. 
He is very dangerous and should not be confronted in any way. Also, If he is 
wearing any weapon (knife, gun) we need to know. We have a protection order 
against him and if he has any of the above that is a fed violation and maybe we 
can deal with it on that level. This guy is VERY dangerous and should not be 
taken lightly. Get to recognize him and run away if you see him. Don’t take any 
chances. This has gotten way out of hand and no one needs to be hurt by this 
bozo.

Let’s be careful out there.

Blake












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Re: [meteorite-list] Hunting Arizona's Newest Strewn Field

[Matson, Rob D. via Meteorite-list]

Hi Ruben:

"These pictures were taken with a hand held digital camera so, no worries."

Just FYI, depending on the camera, that is not a safe assumption. I have a 
point-and-shoot Olympus TG Tough digital camera that I use primarily for scuba 
diving and snorkeling and it has a GPS receiver and geotags photos unless the 
feature is disabled. In any case, I think I could use your photo to get much 
closer than you might think, but then I'm probably an exception that you 
wouldn't be concerned  about. ;-). --Rob



On Tue, Dec 6, 2016 at 9:02 PM, Galactic Stone & Ironworks
 wrote:
> Hi Ruben and List,
>
> Make sure you strip out all location data from the photos before
> uploading them. Most mobile phone cameras attach GPS coordinates to
> the photo file. You can strip them out easily, but many people forget
> or don't realize the data is there.
>
> I uploaded a photo of one of my fossil spots to a forum and forgot to
> strip out the location data. Another member messaged me in private and
> told me he saw the exact coordinates of our location in the photo
> data. I quickly deleted the photo, stripped the data from the file,
> and re-uploaded it.
>
> Best regards and happy hunting,
>
> MikeG
>
> www.galactic-stone.com
>
>
> On 12/6/16, Ruben Garcia via Meteorite-list
>  wrote:
>> Of course, I'm partly joking.  I think most of Northwest Arizona looks
>> like this.  However, I do think someone could get within 7 - 10 miles
>> of the area without much trouble. Finding the exact area would be a
>> little more difficult.
>>
>> On Tue, Dec 6, 2016 at 3:49 PM, Ruben Garcia 
>> wrote:
>>> Then get out there and find more , what are you waiting for?  Lol
>>>
>>> On Dec 6, 2016 3:10 PM, "Jim Wooddell via Meteorite-list"
>>>  wrote:

 Hi List!


 Geese Ruben, your pictures tell us exactly where you are!


 Take care out there!


 Jim


 On 12/06/2016 11:05 AM, Michael Mulgrew via Meteorite-list wrote:
 > Great looking stones, I hope this strewn field turns out to be one
 > that produces for many, many years!  Looking forward to the
 > classification and getting out there myself.  So much terrain like
 > that in AZ, every time I drive through the state I want to stop and
 > cold hunt just about everywhere.
 >
 > Michael in so. Cal.
 >
 > On Fri, Dec 2, 2016 at 10:03 PM, Ruben Garcia via Meteorite-list
 >  wrote:
 >> My friend Myke Steighler recently found some really fresh looking
 >> (probably L) chondrite meteorites in Northwest Arizona.
 >>
 >> Today he invited Dustin Dickens and Myself to hunt what we believe is
 >> Arizona's Newest Strewn field.
 >>
 >> Unfortunately, I can not divulge the exact location until the
 >> classification process is completed.
 >>
 >> However, here are some photos of our hunt and some of Myke's amazing
 >> finds.
 >>
 >> http://www.mrmeteorite.com/arizona-s-newest-strewnfield
 >>
 >>
 >>
 >>
 >>
 >>
 >>
 >> --
 >> Rock On!
 >>
 >> Ruben Garcia
 >> http://www.MrMeteorite.com
 >> __
 >>
 >> Visit our Facebook page https://www.facebook.com/meteoritecentral and
 >> the Archives at http://www.meteorite-list-archives.com
 >> Meteorite-list mailing list
 >> Meteorite-list@meteoritecentral.com
 >> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
 > __
 >
 > Visit our Facebook page https://www.facebook.com/meteoritecentral and
 > the Archives at http://www.meteorite-list-archives.com
 > Meteorite-list mailing list
 > Meteorite-list@meteoritecentral.com
 > https://pairlist3.pair.net/mailman/listinfo/meteorite-list

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 Archives at http://www.meteorite-list-archives.com
 Meteorite-list mailing list
 Meteorite-list@meteoritecentral.com
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>>
>>
>>
>> --
>> Rock On!
>>
>> Ruben Garcia
>> http://www.MrMeteorite.com
>> __
>>
>> Visit our Facebook page https://www.facebook.com/meteoritecentral and the
>> Archives at http://www.meteorite-list-archives.com
>> Meteorite-list mailing list
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>> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>>



--
Rock On!

Ruben Garcia
http://www.MrMeteorite.com
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[meteorite-list] Joel Schiff question

[Matson, Rob D. via Meteorite-list]

Hi All: I'm not sure if my memory is correct, but doesn't or didn't Joel Schiff 
live in Dunedin, New Zealand. I ask because I'm driving through the area right 
now. :-). --Rob

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
Marcin Cimała - POLANDMET via Meteorite-list 
[meteorite-list@meteoritecentral.com]
Sent: Thursday, November 24, 2016 2:42 PM
To: Meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] iron meteorite natural color

> Hello,
> I have a question.
> As we know an iron meteorite, such like Campo del Cielo for example, have
> a black surface.
> I have here a deeply rusted Campo, I'm planning to remove rust with a sand
> blasting process.
> But with this I will obtain a greysh surface, like naked iron, the same
> color of a slice.
> Not really a natural color for the exterior of an iron meteorite and also
> not aestetically pretty, looks too artificial for me.
> There is something to do for restore the original black color?
> Or it's better to remove the rust with a traditional steel brush, maybe
> with a drill ???
>
> Tips for mechanical or chemical process are welkomme!!!
> I can try with the classical NaOh bath, I have also Phosphoric, Citric and
> Oxalic acid :)
>
> Thanks
> xx
> Francesco

Hah good question Francesco. But what is natural color of meteorite at all ?
Desert sandblasted NWA is not a real looking meteorite? Should I paint them
black to be looking like a real meteorites ? Poor Dhofars
This is what Im fighting long time. Strange stereotype that meteorite MUST
BE BLACK outside, WHY ?

When You like Your girlfrend ? When he smile to You with his pretty face or
when she put ton of Max Factor chemicals on it??

I have always strange taste, different than most of collectors. For me, if
specimen have crust must be black or black with rusty patina. If meteorite
have no more crust like Campo, why to "paint" it to black to looks like
Sikhote ? Then You will see paint, not Your meteorite. I only can imagine
what strange things they do to clean Campo and look it like that. LOL

OK now a few tips.
As I understand Your Campo is a complete specimen ? To remove deep rust You
must use electrochemical cleaning + brush + small hammer. Then You will get
mostly cleaned meteorite with BLACK remains of rust that will make Your
meteorite looks REAL.Then heat it and put alot of oil to make it looks fresh
and oriented :)

-[ MARCIN CIMALA ][ +48 793567667 ]-
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com   marcin(at)polandmet.com
[ Member of Polish Meteoritical Society ]



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Re: [meteorite-list] Daytime bolide in Raleigh last week

[Matson, Rob D. via Meteorite-list]

Hi George,

Pat Branch and I have been working the event pretty hard the last 3 days: 
dashcam triangulation,
sonic boom measurements from multiple stations, etc. You can find much of our 
discussion
on the event on the Galactic Analytics Facebook page.  --Rob

From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of George Howard via Meteorite-list
Sent: Monday, September 12, 2016 9:03 AM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Daytime bolide in Raleigh last week

Last Wednesday afternoon there was a widely witnessed daytime bolide in 
Raleigh, NC. I did not see this appear on the list and send now in hopes that 
someone can a identify the fall area and locate a few pieces. There are a lot 
of cleared farm fields in eastern NC. Happy to help!

New report.
http://www.wral.com/daytime-fireball-spotted-over-eastern-nc/16000106/

Kind regards.

George A. Howard | CEO
Restoration Systems, LLC
1101 Haynes Street|Suite 211 | Raleigh, NC 27604
919.755.9490 (direct 334.9105)
www.restorationsystems.com
[Description: cid:image001.gif@01CB6552.174C2160]
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Re: [meteorite-list] How Many Meteorites Are Hidden on Farmland?

[Matson, Rob D. via Meteorite-list]

Hi Bill -- you must have missed it in the article:  6th paragraph:  "At 92% 
iron, 7% nickel, and a 1% mix of sulfur,
carbon and other elements, the Lilienthal's meteorite was part of an asteroid, 
formed 4.5 billion years ago
at the dawn of the solar system, essentially a leftover from the same material 
comprising the sun and the planets."
So it's an iron.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of bill kies via Meteorite-list
Sent: Wednesday, August 31, 2016 2:23 PM
To: Tommy
Cc: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] How Many Meteorites Are Hidden on Farmland?


Pleasant article. Very little hype of the sort we are often inundated with. The 
only thing that I found disappointing was the lack of information pertaining to 
the rock/meteorite itself.

Kinda looks like a pallasite but that's just a silly guess, I guess ; since 
it's only based on a glance. Any thoughts?

Thanks,
Bill
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[meteorite-list] Dodging death in the Czech Republic

[Matson, Rob D. via Meteorite-list]

As the Count said, far too light. End of story. But it's good that he put it 
inside a plastic bag to
protect himself from radiation. Next time I'm getting x-rays at the dentist, 
I'll tell her she
can forgo the lead apron -- a plastic sheet will work just fine. ;-)  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Tommy via Meteorite-list
Sent: Monday, August 01, 2016 8:49 AM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Lucky teen inches from death as METEORITE crash lands 
next to him


Rght.

http://www.dailystar.co.uk/news/latest-news/534338/Lucky-teen-inches-death-METEORITE-crash-lands-next-him


Regards!


Tom
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[meteorite-list] Earth time dilation: minimal latitude-dependence

[Matson, Rob D. via Meteorite-list]

Hi All,

> I'm now working through the math to figure out the latitude on earth where you
> age the slowest.

Turns out the combination of 1/r GR effect from mass, a latitude-dependent 
quadrupole
component, and the centripetal term (special relativity) due to the earth's 
rotation nearly
compensate for one another in such a way that there is very little change in 
clock speeds
at the earth's surface as a strict function of latitude. Clocks run slowest at 
the equator,
marginally faster at midlatitudes, and then slower again at the poles (but not 
quite as
slow as at the equator). Local changes in gravitational field strength probably 
dominate
over changes with latitude. And altitude plays a much stronger roll at any 
latitude.

--Rob

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Re: [meteorite-list] More fun with GR

[Matson, Rob D. via Meteorite-list]

Hi Doug -- you are very close to the correct altitude of ~3167 km (~1.4965 * 
earth equatorial
radius). I'm now working through the math to figure out the latitude on earth 
where you
age the slowest. ;-)  --Rob

-Original Message-
From: MexicoDoug [mailto:mexicod...@aol.com] 
Sent: Thursday, July 21, 2016 9:57 AM
To: falco...@sbcglobal.net; Matson, Rob D.
Cc: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] More fun with GR

Hi Rob and the other meteoroidal travelers,

I'd say a good mean altitude for government work would be about half of Earth's 
radius, and that ought to smooth out any technicalities to gain an 
understanding of the magnitudes which is what is interestng about the new 
question.

A shortcut to calculate that is to set the free fall velocity (no atmosphere) 
equal to the orbital (tangential) velocity; it avoids the calculus by using the 
velocity derived from the drop in potential from orbit altitude to surface 
level.

v^2 = GM/r'  (orbital)
v^2 = 2GM/r -2GM/r' (gravitational)

If you solve for the altitude simultaneously, r'-r, you get the altitude of 
half again Earth's diameter easily.

Unless there are more Golgafrinchans lurking somewhere in the thread history!

That is a Medium Earth Orbit.  In a perfect universe, 3189 km altitude.  
Nothing special orbit wise, unless you are temporally centric in which case it 
could be called a temporally synchronous orbit, which clearly the universe is 
notvery concerned about as we are ;-)

Kindest wishes
Doug








-Original Message-
From: James Beauchamp <falco...@sbcglobal.net>
To: Matson, Rob D. <robert.d.mat...@leidos.com>
Cc: MexicoDoug <mexicod...@aol.com>; meteorite-list 
<meteorite-list@meteoritecentral.com>
Sent: Thu, Jul 21, 2016 10:31 am
Subject: Re: [meteorite-list] More fun with GR

For the satellite, it varies according to the gravity field it flies over.

Technically none exists because the gravity field is never constant.  It 
dithers.

Sent from my iPhone

On Jul 21, 2016, at 2:01 AM, Matson, Rob D. via Meteorite-list 
<meteorite-list@meteoritecentral.com> wrote:

Hi Doug,

I think you would have come up with the correct answer if I had given a more 
precise value for the clock slow down relative to a stationary clock in deep 
space:  it should be 0.69693 parts per billion relative to a clock at sea-level 
on the earth's equator, or 60.2 microseconds per day. It is no accident that 
the distant rock's velocity would need to be
11.19 km/sec for its clock to remain synchronized with one on the earth's 
equator. That value should be very familiar to meteorite folks. :-)

Here's a harder, but related problem:  at what altitude must a satellite in a 
circular orbit fly for its clock to run at the same speed as a clock on the 
earth's equator?

Another interesting GR factoid:  the core of the earth is actually
2 1/2 years younger than the crust (ignoring convection in the core, plate 
tectonics, etc.) If the earth is modeled as having constant density, the 
calculation works out to about 1 1/2 years younger, but of course earth is much 
denser at the core, resulting in even greater time dilation there.  --Rob 

From: MexicoDoug [mexicod...@aol.com]
Sent: Wednesday, July 20, 2016 4:03 PM
To: Matson, Rob D.; meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] age of meteorites

Rob and all,

> For instance, even at solar system escape velocity at earth's distance 
> from the sun (42 km/sec)

What is...The ultimate question of life and the answer to everything?

> Extra-credit question for the mathematically
> inclined:  at what velocity relative to the earth would a meteoroid 
> have to travel to have its clock stay in sync with a clock at the 
> earth's surface?  :-)

Given the figure you mention of 0.6 ppb (52 microseconds per day faster) this 
question asks be nullified, maybe 10 km/s velocity relative to earth?

A good relative velocity to hunt a flock of wild space geese coming to roost on 
Earth, wearing accurate Rolexes ...  But should the meteoroid transition to our 
gravity, the on-board Rolex might abandon its precision for a few spectacular 
minutes, and have an "error" of a couple of nanoseconds ;-)

Kindest wishes
Doug


-Original Message-
From: Matson, Rob D. via Meteorite-list <meteorite-list@meteoritecentral.com>
To: meteorite-list <meteorite-list@meteoritecentral.com>
Sent: Mon, Jul 18, 2016 6:43 pm
Subject: Re: [meteorite-list] age of meteorites

It's not a bad idea, Pete, but unfortunately the time dilation is  really 
minimal unless you get up to a substantial fraction of the speed of light. For 
instance, even at solar system escape velocity at earth's distance from the sun 
(42 km/sec), a meteoroid's clock would be running at about
10 parts per billion slower than that of a stationary rock. (Additional note: 
due to general relativity, a cloc

[meteorite-list] More fun with GR

[Matson, Rob D. via Meteorite-list]

Hi Doug,

I think you would have come up with the correct answer if I had given
a more precise value for the clock slow down relative to a stationary
clock in deep space:  it should be 0.69693 parts per billion relative to
a clock at sea-level on the earth's equator, or 60.2 microseconds per
day. It is no accident that the distant rock's velocity would need to be
11.19 km/sec for its clock to remain synchronized with one on the
earth's equator. That value should be very familiar to meteorite folks. :-)

Here's a harder, but related problem:  at what altitude must a
satellite in a circular orbit fly for its clock to run at the same speed
as a clock on the earth's equator?

Another interesting GR factoid:  the core of the earth is actually
2 1/2 years younger than the crust (ignoring convection in the core,
plate tectonics, etc.) If the earth is modeled as having constant density,
the calculation works out to about 1 1/2 years younger, but of course
earth is much denser at the core, resulting in even greater time dilation
there.  --Rob

From: MexicoDoug [mexicod...@aol.com]
Sent: Wednesday, July 20, 2016 4:03 PM
To: Matson, Rob D.; meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] age of meteorites

Rob and all,

>For instance, even at solar system escape velocity
>at earth's distance from the sun (42 km/sec)

What is...The ultimate question of life and the answer to everything?

>Extra-credit question for the mathematically
>inclined:  at what velocity relative to the earth
>would a meteoroid have to travel to have its
>clock stay in sync with a clock at the earth's
>surface?  :-)

Given the figure you mention of 0.6 ppb (52 microseconds per day faster) this 
question asks be nullified, maybe 10 km/s velocity relative to earth?

A good relative velocity to hunt a flock of wild space geese coming to roost on 
Earth, wearing accurate Rolexes ...  But should the meteoroid transition to our 
gravity, the on-board Rolex might abandon its precision for a few spectacular 
minutes, and have an "error" of a couple of nanoseconds ;-)

Kindest wishes
Doug


-Original Message-
From: Matson, Rob D. via Meteorite-list <meteorite-list@meteoritecentral.com>
To: meteorite-list <meteorite-list@meteoritecentral.com>
Sent: Mon, Jul 18, 2016 6:43 pm
Subject: Re: [meteorite-list] age of meteorites

It's not a bad idea, Pete, but unfortunately the time dilation is  really 
minimal unless you get up
to a substantial fraction of the speed of light. For instance, even at solar 
system escape velocity
at earth's distance from the sun (42 km/sec), a meteoroid's clock would be 
running at about
10 parts per billion slower than that of a stationary rock. (Additional note: 
due to general relativity,
a clock on a meteoroid would be running about 0.6 parts per billion *faster* 
than a clock at the
earth's surface, but that is more than made up for by the time dilation due to 
special relativity.)

Extra-credit question for the mathematically inclined:  at what velocity 
relative to the earth
would a meteoroid have to travel to have its clock stay in sync with a clock at 
the earth's
surface?  :-)  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Pete Shugar via Meteorite-list
Sent: Monday, July 18, 2016 3:12 PM
To: The List
Subject: [meteorite-list] age of meteorites

greetings to all,
my background is in electronics. everything deals with either C or C2.
Einstein states that nothing goes faster than the speed of light and that as 
you approach the speed of light, things get older slower.
So this meteorite in it's travels is going at a rate that is a subtantual 
percentage of the speed of light. Has anyone taken this into consideration when 
placing an age on the meteorite?
Just a thought to tickle the old brain cells!!
Pete Shugar
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Re: [meteorite-list] age of meteorites

[Matson, Rob D. via Meteorite-list]

It's not a bad idea, Pete, but unfortunately the time dilation is  really 
minimal unless you get up
to a substantial fraction of the speed of light. For instance, even at solar 
system escape velocity
at earth's distance from the sun (42 km/sec), a meteoroid's clock would be 
running at about
10 parts per billion slower than that of a stationary rock. (Additional note: 
due to general relativity,
a clock on a meteoroid would be running about 0.6 parts per billion *faster* 
than a clock at the
earth's surface, but that is more than made up for by the time dilation due to 
special relativity.)

Extra-credit question for the mathematically inclined:  at what velocity 
relative to the earth
would a meteoroid have to travel to have its clock stay in sync with a clock at 
the earth's
surface?  :-)  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Pete Shugar via Meteorite-list
Sent: Monday, July 18, 2016 3:12 PM
To: The List
Subject: [meteorite-list] age of meteorites

greetings to all,
my background is in electronics. everything deals with either C or C2.
Einstein states that nothing goes faster than the speed of light and that as 
you approach the speed of light, things get older slower.
So this meteorite in it's travels is going at a rate that is a subtantual 
percentage of the speed of light. Has anyone taken this into consideration when 
placing an age on the meteorite?
Just a thought to tickle the old brain cells!!
Pete Shugar
__

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Re: [meteorite-list] Request for assistance

[Matson, Rob D. via Meteorite-list]

Hi Marc,

Here are the time-stamps I've got for these, and the prospects for refining 
some of them:

Indian Butte - 7 June 1998, ~8:58 pm MST (3:58 UT on 8 June 1998); Robert Ward 
might have a more
accurate time. This time is based on a single California witness. I'm unaware 
of any time-calibrated
records of the event, but the fall was definitely prior to 4:00 UT.

Elbert - 11 January 1998, ~00:09 am MST (7:09 UT). Again, no good instrumented 
record of the
exact time of the fall or start of dark flight.

Osceola - 24 January 2016, ~10:25:10 am EST (~15:25:10 UT). This estimate is 
probably good to +/-
10 seconds. It's based on a combination of sonic boom time delay and an iPhone 
6S picture
of the dust trail snapped at 10:25:37 am at least 15 seconds after the fireball.

Cartersville - 1 March 2009, ~22:50 EST (~3:50 UT on 2 March). I'm not aware of 
any videos of
this event; it might be worth trying to find archive seismograph data for this 
fall to help
constrain the event time. ET.SWET was active at the time of the fall.

Battle Mountain - 21 August 2012 ~23:17 PDT (~6:17 UT on 22 August). Should be 
able to refine
this further using the sonic boom signature from LB.BMN at 6:18:17 UT in 
conjunction with a
radiosonde temperature profile for the area at the time of the fall.

Kitchener - 12 July 1998 ~8:30 am EDT (~12:30 UT). As you know, Buffalo radar 
got a big hit
sometime around 12:38 UT. I originally looked at this one back in 2010 and 
revisited it again
in 2014. We'll probably never have good timing information on this one.

Ash Creek - 15 February 2009 ~10:58 am CST (~16:58 UT). This is another one 
that I've been
meaning to revisit seismographs for in the hopes of improving the fall time 
estimate.

Monahans - 22 March 1998 ~18:37 CST (~00:37 UT on 23 March). Estimate is based 
entirely
on KMAF radar. Probably hopeless to get an accurate time for this fall.

Lorton - 18 January 2010 ~17:38 EST (~22:37 UT). Time is an estimate from 
witness statements
and the earliest radar hit from KLWX. Another one that might benefit from a 
search for
seismic data.

Mifflin - 14 April 2010 22:06 CDT (3:06 UT 15 April). Since the earliest radar 
return on this one
is at the somewhat unprecedented altitude of nearly 30 km, I would use the 
precise time
of this scan plus maybe a couple seconds to signal the start of dark flight. 
For confirmation
of the time, I could use the US.JFWS seismograph which recorded the sonic boom 
at
3:07:35 UT.

--Rob
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[meteorite-list] Request for assistance

[FRIES, MARC D. (JSC-XI211) via Meteorite-list]

Howdy ladies and gents

I am working with summer intern Colleen Laird from Case Western Reserve
U. to develop mathematical tools for quantifying meteorite falls from
radar data.  Colleen has made superb progress and we should soon be able
to offer estimates for the total mass that falls in any given meteorite
fall, the percent that is actually recovered, and possibly provide some
insight on the type of meteorite that falls from its radar behavior
(maybe!).  To do these things, we need to calculate the mass of meteorites
seen in previous meteorite falls, and to that we need accurate time stamps
for the fireball terminus (e.g. The point when a meteor goes dark).
Terminus altitudes are useful too, but we really need the times as
accurately as possible.

Of the meteorite falls Colleen is working on, we don¹t have an accurate
time stamp for the following ones.  Could I ask y¹all to dig into your
videos and notes for these events and look for terminus times?  We will
produce a paper and make it available, and should be able to estimate the
total mass reaching the ground for future meteorite falls.

Cheers,
Marc Fries



> We are missing accurate fireball end time information for:
>Indian Butte
>Elbert
>Osceola
>Cartersville
>Battle Mountain
>Kitchener
>Ash Creek
>Monahans
>Lorton
>Mifflin
>-- 
>Colleen Elizabeth Laird
>B.S. Geological Science
>Case Western Reserve University, 2018

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Re: [meteorite-list] More on meteorite temperature

[Matson, Rob D. via Meteorite-list]

Hi Larry/All,

Yes -- that's where that factor of 4 comes into the denominator. For a sphere,
one hemisphere is collecting solar radiation. If the sphere's radius is R, then 
the
sphere presents pi*R^2 of collecting area -- same as if it were a disk of 
radius R
pointing normal to the sun. However, that sphere re-radiates (mostly in the
infrared) from a 4*pi*R^2 surface area. So there ends up being a geometric
factor inside the radical that is the ratio of the solar collecting area divided
by the thermal emitting area. Now, a point I did not mention yesterday is
that thermal equilibrium does *not* mean that the entire sphere is at the same
temperature. Even if the sphere was spinning fairly rapidly (barbecue mode),
the surface temperature will still have latitude dependence. Just as on earth,
points on the surface near the equator will be warmer than those near the
poles. But the overall energy balance means that the average temperature
of the entire sphere will be constant.

But this segues into how you can end up with a meteoroid that has a much
warmer equilibrium temperature:  its shape. What if the meteoroid had a
shape more like a flat plate or the disk mentioned above?  Then the ratio
of the collecting area divided by the total surface area is larger, and 
therefore
the equilibrium temperature is higher. Let's start with the case of a circular
disk that is flipping like a tiddlywink (or a flipped coin if you are too young
to know what a tiddlywink is). When the disk is normal to the sun, it
collects the maximum area (pi*r^2), but when edge-on it collects nothing.
The average collecting area over time ends up being (2/pi) * (pi*r^2), or
simply 2 r^2. But the thermally emitting surface area is 2*pi*r^2. So the
absorption-to-emission area ratio is 1/pi. So instead of:

Te = [S0 * (1-A) / (4*epsilon*sigma)] ^ (1/4)

we have

Te = [S0 * (1-A) / (pi*epsilon*sigma)] ^ (1/4)

Recall previously that if we set the albedo to 20%, emissivity to 80%, and
use the solar constant at perihelion (S0 = 1414 W/m^2), we got Te =291.1 K.
But for the case of a flipping disk-shaped meteoroid, we get:

S0 = 1414
pv = 0.2
epsilon = 0.8
A = .393*pv = .0786
Te = [1414 * (1-.0786) / (pi * 0.8 * sigma)] ^ 0.25 = 309.2 K = 96.9 F.

So, nearly body-temperature. Can we get warmer still? Sure!  Change the
axis of rotation of the disk so that it is spinning like a wheel and pointed
normal to the sun. Now the collecting-area-to-emitting-area ratio
increases to 1/2, and the Te equation becomes:

Te = [1414 * (1-.0786) / (2 * 0.8 * sigma)] ^ 0.25 = 346.2 K = 163.5 F.

I would call that "hot". Of course, no meteoroid is shaped like a disk or
a flat plate, but then again no meteoroid is shaped like a sphere. All real
meteoroids lie somewhere between these extremes. But for a meteoroid
with a modestly high albedo encountering the earth in early January with
a spin axis that maximizes the amount of its surface area oriented
toward the sun, the rock could actually start out hot.  --Rob

-Original Message-
From: lebof...@lpl.arizona.edu [mailto:lebof...@lpl.arizona.edu] 
Sent: Friday, July 01, 2016 7:47 AM
To: Matson, Rob D.
Cc: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] More on meteorite temperature

Hi Rob:

Did you remember an object is only illuminated by the Sun half the time?

Larry
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[meteorite-list] More on meteorite temperature

[Matson, Rob D. via Meteorite-list]

Hi All,

Playing Devil's Advocate, I decided to try coming up with a scenario that 
attempts to maximize the
thermal equilibrium temperature of a chondritic meteoroid just prior to 
encountering the earth's
atmosphere. The typical formula for computing the thermal equilibrium 
temperature for an
object without an atmosphere is:

Te = [S0 * (1-A) / (4*epsilon*sigma)] ^ (1/4)

where the body is assumed to be spherical (the source of the 4 in the 
denominator), S0 is the
solar constant (mean value 1361 W/m^2), A is the bolometric Bond albedo, 
epsilon is the
meteoroid's emissivity, and sigma is the Stefan-Boltzmann constant (5.670 x 
10^-8 W/m^2-K^-4).
A, in turn, can be estimated from the following equation:

A ~= q * pv

where q is the phase integral and pv is the visible albedo. Using Bowell's H, G 
magnitude system,
we can compute q from:

q = 0.290 + .684*G

The commonly used value for the slope parameter, G, is 0.15, in which case:

q = 0.393
A = 0.393 * pv

For very dark asteroids (e.g. Trojan asteroids, Hildas, Cybeles), the albedo 
can be 5% or lower.
However, most NEOs have semi-major axes less than 3 a.u. and albedos averaging 
closer
to 20%.

The final missing value is the emissivity. For regolith, a range of 0.9-0.95 is 
often mentioned.
However, emissivity and albedo work hand-in-hand (epsilon + pv ~= 1). So if 
we're going
to choose an emissivity of 0.9, we should set the albedo, pv, to 10%.

So what is a typical equilibrium temperature for a spherical NEO with 10% 
albedo, 0.9
emissivity, 1 a.u. from the sun?

A = .393*10% = .0393

Te = [1361 * (1-.0393) / (4*0.9*5.67 x 10^-8)]^0.25 = 282.9 K or about 49.6 F

So, cool, but certainly not freezing. How can we get a warmer answer?  One way 
is to pick the
time of year when the earth is closest to the sun (early January) and the solar 
constant is
higher:  about 1414 W/m^2.  This raises the temperature in the above example to 
285.6 K,
or 54.4 F. Still not warm, but warmer. Lowering the emissivity will help, too. 
Let the albedo
increase to 20%, and set the emissivity to 0.8. With the perihelion solar 
constant, the
equilibrium temperature is now up to 291.1 K (64.3 F). Lowering the emissivity 
further
is probably not realistic for most earth-crossing asteroids, so we're at the 
limit of what
we can achieve via S0 and emissivity.

However, there *is* a way to get a big increase in the equilibrium temperature 
which
I'll cover in the next installment.  --Rob
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[meteorite-list] Meteorite temperature (again)

[Matson, Rob D. via Meteorite-list]

If the meteorite had a temperature significantly different from ambient, I'd go 
with
extremely cold (e.g. -30 F). To the unsuspecting, bitter cold could be 
misinterpreted
as very hot. If you don't believe me, try putting a clothes iron in the freezer 
for a
couple hours and then surprise someone (unaware of your setup) by touching the
iron to their arm.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Tommy via Meteorite-list
Sent: Tuesday, June 28, 2016 1:22 PM
To: Peter Scherff
Cc: Meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Meteorite Crashes Through Thailand House Roof

  Hi Peter!
 I get the friction part but THAT much friction?

Tom


On 06/28/2016 04:09 PM, Peter Scherff wrote:
> Hi Tom,
>
> I believe that part i.e. "I picked up the largest chunk and let go 
> quickly as it was very hot,". Have you ever held a nail that you just 
> pulled out of a board? The nail is very warm. The friction of punching 
> a hole through a home, car or the ground can heat up a meteorite. Now 
> if they start talking about the fires it started I am with you.
>
> Thanks,
>
> Peter
>
> -Original Message-
> From: Meteorite-list 
> [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of 
> Tommy via Meteorite-list
> Sent: Tuesday, June 28, 2016 4:03 PM
> To: meteorite-list@meteoritecentral.com
> Subject: Re: [meteorite-list] Meteorite Crashes Through Thailand House 
> Roof
>
> "I picked up the largest chunk and let go quickly as it was very hot,"
> 65-year-old home-owner Bualom Chalomprai said. "
>
>
> Her mind must have been playing tricks on her.
>
> Regards!
>
> Tom
>
>
> On 06/28/2016 03:02 PM, Ron Baalke via Meteorite-list wrote:
>
> __
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[meteorite-list] Couple loans unexpected find to UCLA Meteorite Gallery

[Matson, Rob D. via Meteorite-list]

Hi Tommy/Art/All,

Great article and a spectacularly oriented meteorite – apparently found in the 
general vicinity
of my first meteorite find (Silver Dry Lake 001). [Note: I’m not suggesting 
they might be paired!]
I think Bob Haag’s Adamana stone has some serious competition!  To think it 
spent any time as
a lowly door stop. ;-)  --Rob

From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Art via Meteorite-list
Sent: Monday, June 27, 2016 8:48 AM
To: Meteorite List
Subject: [meteorite-list] From the dailybruin.com - Couple loans unexpected 
find to UCLA Meteorite Gallery

Great news for UCLA ... Marvin, John, Nick, and Jason mentioned in this
article about the Eltrich's awesome find.

http://dailybruin.com/2016/06/27/couple-loans-unexpected-find-to-ucla-meteorite-gallery/

-Art
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Re: [meteorite-list] What killed off megafauna?

[Matson, Rob D. via Meteorite-list]

Earth provides no real protection for the Moon from asteroid/meteoroid impact. 
I think the earth subtends something like one 15,000th of the celestial sphere 
from Luna's perspective. Yes, there is a gravitational factor that improves 
that a bit, but you're still talking a tiny fraction of a percent "protection". 
Doubt it's even measurable as far as earth impact rate vs. Moon's.  --Rob

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
E.P. Grondine via Meteorite-list [meteorite-list@meteoritecentral.com]
Sent: Thursday, June 23, 2016 4:39 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] What killed off megafauna?

Hi Paul -

Two of the impact events are now pretty well known:

http://archaeologica.boardbot.com/viewtopic.php?f=9=3656
http://archaeologica.boardbot.com/viewtopic.php?f=9=3668

Of course, work is just beginning on the sequence of impacts for South America 
and their
related meltwater pulses.

It is really strange to watch the psychological process of denial going on here.
I wish I had just a small part of the money spent on this denial for more 
research into what actually occurred.

Or better yet, have your personal salary dependent on actual impact research.
That would certainly focus your own fine skills.

BTW, you can not use impact data from the Moon in a straight line to estimate 
the
impact hazard for the Earth.

The Earth usually protects the Moon from impactors.

E.P.
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Re: [meteorite-list] $20,000 for the Maine meteorite fall.

[Matson, Rob D. via Meteorite-list]

Hi Shawn,

> I guess there is a reward for a piece of the meteorite fall in Maine.
> $20,000. I wonder if that's for the main mass, or a piece of the Lunar 
> meteorite?

Actually, neither. The stipulation was for the first 1 kg (very unlikely that 
one that large
will be found). In any event, it's definitely not a lunar fall.  --Rob
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Re: [meteorite-list] Meteorite-list Digest, Vol 159, Issue 18

[FRIES, MARC D. (JSC-XI211) via Meteorite-list]

I can always tell when y¹all are up to something.  The list becomes
really, really quietŠ   Heheh.

Good luck,
Marc

On 5/18/16, 12:26 AM, "Meteorite-list on behalf of
meteorite-list-requ...@meteoritecentral.com"
 wrote:

>Send Meteorite-list mailing list submissions to
>   meteorite-list@meteoritecentral.com
>
>To subscribe or unsubscribe via the World Wide Web, visit
>   https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>or, via email, send a message with subject or body 'help' to
>   meteorite-list-requ...@meteoritecentral.com
>
>You can reach the person managing the list at
>   meteorite-list-ow...@meteoritecentral.com
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of Meteorite-list digest..."
>
>
>Today's Topics:
>
>   1. Meteorite Picture of the Day (valpar...@aol.com)
>   2. O.R. Norton (+May 17, 2009) (Bernd V. Pauli)
>
>
>--
>
>Message: 1
>Date: Tue, 17 May 2016 00:00:11 -0700
>From: 
>To: 
>Subject: [meteorite-list] Meteorite Picture of the Day
>Message-ID: <088B23897EEF41E0ABDB8B0628522ABE@Seuthopolis>
>Content-Type: text/plain
>
>Today's Meteorite Picture of the Day: Mundrabilla
>
>Contributed by: John Divelbiss
>
>http://www.tucsonmeteorites.com/mpodmain.asp?DD=05/17/2016
>
>
>--
>
>Message: 2
>Date: Tue, 17 May 2016 09:32:12 +
>From: "Bernd V. Pauli" 
>To: meteorite-list@meteoritecentral.com
>Subject: [meteorite-list] O.R. Norton (+May 17, 2009)
>Message-ID: 
>Content-Type: text/plain; charset="iso-8859-1"
>
>He paved the way for so many of us!
>
>Bernd
>
>--
>
>NORTON O.R. (1998) Are chondrites sedimentary rocks?
>(M! Feb. 1998, Vol. 4, No. 3, pp. 22-23).
>
>NORTON O.R. (1998) Rocks From Space, 2nd edition.
>
>NORTON O.R. (1998) The Goose Lake Meteorite
>(M!, Feb. 99, Vol. 5, No. 1, pp. 30-32).
>
>NORTON O.R. (1999) Is Lawrencite a myth?
>(M!, May 1999, Vol. 5, No. 2, pp. 22-23).
>
>NORTON O.R. (2000) So NEAR yet so far
>(M!, Vol. 6,  No. 1, Feb 2000, pp. 22-24).
>
>NORTON O.R. (2000) Igneous clouds and chondrule rims
>(Meteorite, Nov 2000, Vol. 6, no.4, pp. 22-23).
>
>NORTON O.R. and TOFFOLI T. (2000) Chondrites - A novel way
>to photograph them (M!, Vol. 6, No. 1, Feb 2000, pp. 20-23).
>
>NORTON O.R. (2001) Centerpiece: Kapoeta - A Howardite Extra-
>ordinaire (Meteorite, May 2001, Vol. 7, No. 2, pp. 22-24).
>
>NORTON O.R. (2001) Ugly Ducklings of the desert (Meteorite
>Magazine, August 2001, Vol. 7, No. 3, pp. 22-23).
>
>NORTON O.R. (2002) The Cambridge Encyclopedia of Meteorites
>(Cambridge University Press, ISBN 0 521 62143 7, pp. 354).
>
>NORTON O.R. (2002) Beware the metal-rich imposter (Meteorite,
>February 2002, Vol. 8, No. 1, Centerpiece, pp. 22-23 + p. 39).
>
>NORTON O.R. et al. (2002) Basics of polarized light microscopy,
>part II (Meteorite, Centerpiece, Nov 2002, Vol. 8, No. 4, pp. 22-24).
>
>NORTON O.R. et al. (2003) Basalts of differentiated worlds
>(Meteorite, Centerpiece, May 2003, Vol. 9, No. 2, pp. 21-24).
>
>NORTON O.R. (2003) Petrographic Gallery of Meteorites(Meteorite
>Magazine, August 2003, Vol. 9, No. 3, pp. 21-24).
>
>NORTON O.R. (2008) Field Guide to Meteors and Meteorites(Patrick
>Moore's Practical Astronomy Series, ISBN 978-1-84800-156-5, 287 pp.).
>
>
>
>
>--
>
>Subject: Digest Footer
>
>___
>Visit our Facebook page:
>https://www.facebook.com/meteoritecentral
>and the Archives at http://www.meteorite-list-archives.com
>Meteorite-list mailing list
>Meteorite-list@meteoritecentral.com
>https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>
>
>--
>
>End of Meteorite-list Digest, Vol 159, Issue 18
>***

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Re: [meteorite-list] Taiwan elementary school asteroid search program discovers 8 potentially new asteroids - video

[Matson, Rob D. via Meteorite-list]

Hi Dirk,

Do you happen to know the asteroid designations that the Taiwan elementary 
school children found?
(15 minutes of searching the web has not been fruitful.)  I'm assuming they are 
part of the IASC
("Isaac") international search campaign which involves students (almost 
entirely high schools and
colleges) from all over the world. Different schools are selected to 
participate each year (I think
15 schools for the spring 2016 campaign?)  Participating schools over the years 
have come from
over 20 countries on five continents including the U.S., India, China (to 
include Taiwan), Portugal,
Poland, South Africa, Japan, Ethiopia, Nigeria, Brazil, Bulgaria, Germany, 
England, Kenya, Russia,
Austria, Ghana, Ireland, Italy, Switzerland, Puerto Rico, and more recently São 
Tomé and Príncipe,
Panama and Morocco.

The reason I ask about the Taiwan designations is that I can attempt to locate 
them in archive
imagery. If I'm successful, this will accelerate their numbering (which is a 
prerequisite for
naming).  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of drtanuki via Meteorite-list
Sent: Thursday, May 12, 2016 4:28 AM
To: Meteorite Mailing List
Subject: [meteorite-list] Taiwan elementary school asteroid search program 
discovers 8 potentially new asteroids - video

List,
Taiwan elementary school asteroid search program discovers 8 potentially new 
asteroids video 
http://lunarmeteoritehunters.blogspot.jp/2016/05/taiwan-elementary-school-asteroid.html
 

Dirk Ross...Tokyo The Latest Worldwide Meteor/Meteorite News 
http://lunarmeteoritehunters.blogspot.com/ters.blogspot.com/
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Re: [meteorite-list] Oriented vs Orientated

[Matson, Rob D. via Meteorite-list]

A related faux pas: desalinization. No such word, but I bet it will become one 
so as not to embarrass the media members who like to use it. ;-). --Rob

From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of 
Pete Modreski via Meteorite-list [meteorite-list@meteoritecentral.com]
Sent: Monday, May 09, 2016 10:46 AM
To: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Oriented vs Orientated

My other favorite word that gets used by non-geologists: metamorphosized .  (Do 
you Brits use that one, by chance?)  I think it fits the rhythym better in some 
songs and poems.

Cheers, Pete


-Original Message-
From: howardites via Meteorite-list 
To: meteorite-list 
Sent: Mon, May 9, 2016 11:16 am
Subject: [meteorite-list] Oriented vs Orientated

It certainly got everyone thinking ;-)


If you would like? for the sake of keeping the peace and despite the fact us 
Brits widely use orientated I will use oriented.

Just to let you know in advance I use some really bizarre words and if it's in 
the English dictionary (UK version) I will use it!

I won't shun you for your choice of words so please don't shun me :-) we are 
all different.

Best wishes from across the pond

Xxx




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Re: [meteorite-list] Green Fireball Lights Up Skies Over Southern California

[Matson, Rob D. via Meteorite-list]

Hi Ron/All,

Fireball ended up in the Pacific Ocean a good 100 miles off the coast of 
northern Baja.
It was recorded by at least 5 all-sky cameras in addition to the dashcam video 
from
I-5 south in Mission Viejo. Time of the event was 9:38:00 pm PDT (4:38 UT).

--Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Ron Baalke via Meteorite-list
Sent: Wednesday, April 27, 2016 4:33 PM
To: Meteorite Mailing List
Subject: [meteorite-list] Green Fireball Lights Up Skies Over Southern 
California


http://www.ocregister.com/articles/see-713735-fireball-skies.html

Did you see it? Green fireball lights up skies over Southern California Orange 
County Register April 26, 2016

A few people across Southern California were startled to see a green fireball 
in the night skies Tuesday.

Around 10 p.m., according to a report by CBS Los Angeles, the fireball was 
caught on dash cam video as it streaked toward the ground. The object could be 
seen from the Mexican border to the northern part of Ventura County.

What was it? U.S. Strategic Command says it does not believe that the fireball 
was a man-made object. In a statement, the agency said the object did not 
appear to be one of the agency's tracked satellites.

Ed Krupp of the Griffith Observatory in Los Angeles also said he had no idea 
what the object might have been.

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Re: [meteorite-list] First look inside new meteorite from Crosbyton, TX fireball

[d. scott via Meteorite-list]

 blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px 
#715FFA solid !important; padding-left:1ex !important; background-color:white 
!important; }  Beautiful find!  Great work Terry and Sonny.  From your 
meteorite hunting family, Jack and mom!


Sent from Yahoo Mail for iPad


On Monday, April 18, 2016, 11:46 PM, MexicoDoug via Meteorite-list 
 wrote:

Hi Sonny,
Can't really be sure from the pictures but it almost looks like chondrules in a 
breccia ...  Good luck on the classification and congratulations on the nice 
result of a fantastic effort to you and Terry!

Kindest wishes
Doug


-Original Message-
From: wahlperry--- via Meteorite-list 
To: meteorite-list 
Sent: Mon, Apr 18, 2016 10:52 am
Subject: [meteorite-list] First look inside new meteorite from Crosbyton, TX 
fireball

Hi List,

We just received this meteorite back from TCU. Here it is, a look inside this 
beautiful freshly fallen meteorite that Terry Scott and I recovered near 
Crosbyton, TX after the Feb. 18, 2016 fireball. The meteorite is pristine with 
a beautiful light grey matrix loaded with chondrules and metal flakes. Official 
name and classification still pending. The images are also on my Facebook page 
where they appear a little clearer.

http://www.nevadameteorites.com/nevadameteorites/Crosbyton_Texas_Fireball_2016.html


Sonny
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Re: [meteorite-list] Meteorite Picture of the Day

[Matson, Rob D. via Meteorite-list]

Hi Sonny/All,

Note the label on the picture: Osceola #8.  Doug is letting us in on a little 
secret he's
been holding onto for the last 6 weeks or so -- that he knows the pictured find 
is
#8 means that he ~also~ found #7, since previously only six finds were known. 
:-)

Like Larry and Mike's team, Doug put in a lot of days out there, and would 
probably
be there now if not for a serious injury suffered during the course of his 
efforts.
I'd wish him a speedy recovery, but given the amount of time he's already been
laid up, that ship has sailed. So instead I'll wish for Doug that each day is a 
little
bit better than the last and that a full recovery isn't too far off.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of wahlperry--- via Meteorite-list
Sent: Thursday, April 14, 2016 11:25 AM
To: valpar...@aol.com; meteorite-list@meteoritecentral.com; mexicod...@aol.com
Subject: Re: [meteorite-list] Meteorite Picture of the Day

Hi Doug,

Great find? How many hours for your meteorite find?

Sonny


-Original Message-
From: Paul Swartz via Meteorite-list 
To: meteorite-list 
Sent: Wed, Apr 13, 2016 1:00 am
Subject: [meteorite-list] Meteorite Picture of the Day

Today's Meteorite Picture of the Day: Osceola

Contributed by: Mexico Doug

http://www.tucsonmeteorites.com/mpodmain.asp?DD=04/13/2016
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[meteorite-list] Jupiter meteorite question

[Matson, Rob D. via Meteorite-list]

Hi Matija,

Peter is correct of course: there will be no meteorites from any of the gas 
giants. However,
perhaps you meant one of Jupiter's satellites?  That would be a possibility. Of 
course, the impact
producing such future meteorites would have to be sufficiently energetic for 
fragments to
escape not only the satellite's gravity, but also the large gravity well of 
Jupiter itself.  --Rob

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of Peter Scherff via Meteorite-list
Sent: Wednesday, March 16, 2016 11:49 AM
To: 'matija bericic'
Cc: Meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] ?jupiter meteorite

Hi Martija,

Jupiter is a gas giant. The chance of a meteorite from the planet is 0.

Thanks,

Peter

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On 
Behalf Of matija bericic via Meteorite-list
Sent: Wednesday, March 16, 2016 2:00 PM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] ?jupiter meteorite

Does anybody has heard of meteorite from Jupiter? Does it exists? Does anybody 
suspects that maybe he is in possesion of it?
Thanks,
Matija
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