Re: [meteorite-list] Minor Planet families

[Michael Mulgrew]

Graham and list,

For some easy reading on this subject I highly recommend Meteorites
and Their Parent Bodies, authored by Harry Y. McSween, Jr.;
specifically chapter 8, 'A Space Odyssey'.  By discussing impact age,
orbit properties, orbital resonance (mean-motion and secular) and
"escape hatches" Mr. McSween does an excellent job outlining how
meteorites make their way from the asteroid belt to Earth.

Michael in so. Cal.

On Tue, Feb 26, 2013 at 7:32 AM, Graham Ensor  wrote:
>
> Thanks to everybody for their enlightening posts on this
> questionanswering many aspects that I had wondered aboutan
> interesting thread.
>
> Graham
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Meteorite Picture of the Day

[valparint]

Today's Meteorite Picture of the Day: Unclassified

Contributed by: Gourgues Denis

http://www.tucsonmeteorites.com/mpod.asp
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Meteoroid/Asteroid Electro-Magnetic Disruption and Charge Properties?

[drtanuki]

Dear List,
If there is anyone willing to discuss the how and why meteoroids/asteroids 
"detonate" please explain for the list and myself.  I am interested learning 
more about the electrical/mechanical/physical forces that these bodies undergo 
as they reach the earth such as in the latest Russian event. Thank you.
Dirk Ross...Tokyo
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] SPACE EXPO - OFF TOPIC (TANGENTIALLY)

[peterscherff]

Hi Darryl,

Just a few quick thoughts:

Scale model of the solar system
Meteorite hunting in a "salted" strewn field with magnet canes
digital polarizing microscope with a cool thin section
spectroscope
Mars rover race
Make a comet 
telescope observing

Many of these ideas may not work for you. Could you tell us more about the 
event?

Thanks,

Peter
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] AD New Listings on eBay

[Garry Stewart]

Sorry for the earlier confusion LIST, I pit the wrong link in.  This is the 
correct link to one of my items and you can easily see the others from there 
running a search on samhill01.  Once you find me, make sure to bookmark it.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230936292215&ssPageName=STRK:MESE:IT

Garry (Xeqtr)
 
Life is what happens to you while you're busy making other plans.
John Lennon

__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] SPACE EXPO - OFF TOPIC (TANGENTIALLY)

[Darryl Pitt]

Hi, 

I could really use some assistance, please. 

I am involved in a SPACE EXPO and we're in the process of determining what the 
most fun interactive exhibits might be for children who are  8-14.

With the foregoing in mind, what are some of the best interactive exhibits 
you've seen that pertain to space or space travel?   Any ideas or great 
experiences that you or your kids had would be much appreciated.  Thanks so 
much!


A couple of simple examples:

—Child ascends a scale to see how much she weighs on Earth.she moves over 
to the next scale which is calibrated to reveal how much she would weigh on the 
Moonshe then moves over to the next scale to see how much she would weigh 
on Jupiter.  

—Child Walks on the Moon.   [There is a lunar fragment encased  in a Lucite 
brick that a child can walk on, and so they are in effect "Walking on the Moon."



Thanks again for sharing your faves—and if it's currently exhibited, I would 
appreciate your mentioning the name of the institution.   Thanks!


Best / Darryl










__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] AD - New listings on eBay

[Garry Stewart]

Check out my new listings on eBay under the name Samhill01.
http://k2b-bulk.ebay.com/ws/eBayISAPI.dll?ListingConsole¤tPage=LCActive

Garry (Xeqtr)
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Dirty laundry

[tracy latimer]

I am very sorry to bring this up, but don't want anyone else to get burned like 
me.  I have been waiting on Greg Catterton since September to come through on a 
trade.  Despite repeated e-mails and promises that he would 'make it right', I 
have yet to see the lunar display box he agreed to trade for the stack of books 
I sent him last fall.  I have heard from a couple of other list members that 
they have not received their meteorites yet either, months later.  OTOH, he has 
a pretty good record for following through on ebay (ID freedom_factory, 
formerly wanderingstarmeteorites).  This isn't a large item that needs special 
handling, or an international deal that might have gotten locked up in customs.
 
Given this track record, I would highly suggest that anyone who intends to buy 
meteorites from him make sure they do it with a purchase method that has 
recourse.
 
Best!
Tracy Latimer
 
  
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Ad: Lots of TektiteSource updates posted

[Norm Lehrman]

All,

We're still working through the Tucson backlog, but we've posted a bunch of 
inventory updates and new pages.  Besednices, LDG, Henbury scoria, Zhamanshin 
glass, Philippinites, Arizonaites, and heaps more coming daily.  We have some 
great new Sikhote  and Taza bullets still to post, kilos of NWA individuals, 
some nicely oriented, and hundreds of new Australasian tektites in progress.  
Have a look and return often for the pick of the litter.  The cream is skimmed 
early!   www.tektitesource.com  New changes are flagged near the top in the 
"website news" section.

Thanks,
Norm
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] New material LL6 - EUC - CK3/4 - CV3

[Marcin Cimala]

Hello List
I have new material in my shop. Some low TKW specimens and one old timer. 


NWA 7572 [CV3] - with black inclusions
NWA 7573 [CK3/4] - 
NWA 7574 [EUC] - main mass with beautifull flow lines

NWA 7575 [LL6] - fresh colorfull slices
Hammadah al Hammra 183 [LL6] - old time meteorite from Libya

Visit http://www.polandmet.com/

-[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]-
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com   marcin(at)polandmet.com
http://www.Gao-Guenie.com  GSM: +48 (793) 567667
[ Member of Polish Meteoritical Society ]



__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Comet ISON: Incoming Sungrazer

[Ron Baalke]

http://www.space.com/19973-comet-ison.html 

Comet ISON: Incoming Sungrazer
Elizabeth Howell
space.com
February 26, 2013

Comet ISON will make an appearance in Earth's sky in 2013. While it's 
hard to predict just how bright the comet will be when it arrives, some 
astronomers are saying that it could be as bright as the full moon or 
perhaps, even visible in daylight.

The comet is named after a telescope for the International Scientific Optical 
Network. Two Russians spotted ISON through a 15.7-inch (0.4-meter) reflecting 
telescope from that organization.

ISON is considered a "sungrazer," meaning that it will pass very close to the 
sun when it gets into the inner solar system in November 2013.

Discovery and naming

Amateur astronomers Vitali Nevski and Artyom Novichonok spotted the comet in 
photographs taken by an ISON telescope in September 2012.

Even from a great distance, the comet does appear bright, making it possible 
that its nucleus is somewhere between 0.6 miles and 6 miles (1 to 10 
kilometers) 
wide, according to astronomer Matthew Knight of the Lowell Observatory and NASA.

ISON is expected to get as close as 800,000 miles (1.2 million km) from the 
sun's 
surface, providing it survives the gravitational forces or the sun's radiation. 
That closest approach will take place on Nov. 28, 2013.

Traditionally, comets are named after the people who find them, such as 
Shoemaker-Levy 9 that crashed into Jupiter in 1994, or Hale-Bopp that 
brightened 
Northern Hemisphere skies in 1997.

Comet ISON, however, is part of a newer trend that sees the name of the comet 
after the project rather than the individuals who discovered it. This means 
that 
several comets could have the same name, leading to confusion.

For that reason and also because the newer method is less personal, Peter 
Jedicke, 
past president of the Royal Astronomical Society of Canada, is calling for a 
return to the old naming convention.

Every comet also has a name assigned to it by the International Astronomical 
Union that includes features such as the year of discovery. ISON's official 
name is Comet C/2012 S1.

Similar orbit to 1680 'Great Comet'

At the time of its discovery in late September 2012, Comet ISON was 625 million 
miles (1 billion km) from Earth in the constellation of Cancer.

At 584 million miles (939 million km) from the sun, the comet was shining at 
magnitude 18.8 on a scale used by astronomers to gauge how bright sky 
objects are. (Brighter objects have a lower number.) This is about 100,000 
times fainter than what the naked eye can see.

"The most exciting aspect of this new comet concerns its preliminary orbit, 
which 
bears a striking resemblance to that of the 'Great Comet of 1680,'" wrote 
SPACE.com skywatching columnist Joe Rao in a September 2012 article.

A deep-frozen comet could blaze spectacularly as it whips past the sun at 
Thanksgiving, 2013.

"That comet put on a dazzling show; it was glimpsed in daylight and later, as 
it 
moved away from the sun, it threw off a brilliantly long tail that stretched 
up from the western twilight sky after sunset like a narrow searchlight 
beam for some 70 degrees of arc." (A person's clenched fist, held at arm's 
length, covers roughly 10 degrees of sky.)

When the comet was still a long ways from Earth, in February 2013, NASA's Deep 
Impact spacecraft took a series of images of the comet. Deep Impact has snapped 
close-up pictures of two comets before - Tempel 1 and Hartley 2 - but the 
astronomers were fascinated by how much activity was taking place on ISON 
despite 
its great distance from the sun.

"Preliminary results indicate that although the comet is still in the outer 
solar 
system, more than 474 million miles (763 million km) from the sun, it is 
already 
active. As of Jan. 18, the tail extending from ISON's nucleus was already more 
than 40,000 miles (64,400 km) long," NASA stated in a February 2013 press 
release.

Preparing for a sky show

With more than a year to get ready, NASA and other organizations are busy 
making 
plans for how to observe the comet.

The agency's twin Solar TErrestrial RElations Observatory (STEREO) spacecraft 
currently does continuous observations of the sun from orbit. This should 
afford 
the observatories a good view when the comet swings by the sun in November 
2013, NASA stated.

"If Comet ISON works out as expected, the STEREO spacecraft should have a 
spectacular view," NASA stated.

"During the period when Comet ISON is closest to the sun, it will actually pass 
in front of the sun as seen from behind [one of the satellites]," the agency 
added. 
"This opens up the exciting possibility that we might see extreme-ultraviolet 
emission from the comet, as was seen recently with the bright sungrazing 
Comet Lovejoy."

Comets are a notoriously fickle sky object, however, and can flare up or die at 
times that are difficult to predict. Many observers of a certain age recall the 
tale of Comet Kohoutek in 1973, 

[meteorite-list] After Studying Russian Meteor Blast, Experts Get Set For Next Asteroid

[Ron Baalke]

http://cosmiclog.nbcnews.com/_news/2013/02/26/17105332-after-studying-russian-meteor-blast-experts-get-set-for-the-next-asteroid

After studying Russian meteor blast, experts get set for the next asteroid
By Alan Boyle
NBC News
February 26, 2013

The meteor that blew up over the Russian city of Chelyabinsk 11 days ago has 
provided a new focus for the international effort to deal with potentially 
threatening near-Earth objects, one of NASA's top experts on the issue says.

Lindley Johnson, the executive for the Near Earth Object Observation Program at 
NASA Headquarters in Washington, said that the Feb. 15 impact is certain 
to become "by far the best-documented meteor and meteorite in history" 
- but at the time, he and his colleagues could hardly believe it was happening.

"Our first reaction was, 'This can't be. ... This must be some test of a 
missile 
that's gone awry,'" Johnson told NBC News.

The Chelyabinsk meteor exploded at an estimated altitude of 12 miles (20 
kilometers) over the city of 1.1 million in Russia's Urals Mountains, setting 
off a shock wave that blew out windows, caused an estimated $33 million in 
property damage and injured more than 1,200 people.

It was doubly coincidental for Johnson and his colleagues: The meteor was 
thought 
to have been caused by the breakup of a 17-meter-wide (55-foot-wide), 
10,000-ton 
asteroid that entered Earth's atmosphere and released the equivalent of 500 
kilotons of TNT in explosive energy. All this happened just hours before a 
45-meter-wide (150-foot-wide) asteroid, capable of setting off a city-killing 
blast, passed within 17,200 miles (27,680 kilometers) of our planet. Adding to 
that coincidence, researchers from around the world were gathered in Vienna 
for talks aimed at moving forward with an international network to deal 
with ... asteroid threats!

The spectacle in Russia "certainly brought renewed interest to our efforts 
here," 
Johnson said.

He said the recommendations from the researchers were "well-received" and are 
moving up the ladder to the next phase in a U.N.-led process for addressing 
outer-space threats. An action plan could be considered by the U.N. Committee 
on the Peaceful Uses of Outer Space during its next meeting in Vienna in June.

Johnson summarized the three main points of the recommendations:

 o Set up an international asteroid warning network, or IAWN, supported 
with existing detection assets but incorporating additional contributions. "The 
basis of such a network already exists," Johnson said, thanks to NASA, the 
European Space Agency, the International Astronomical Union's Minor Planet 
Center and the NEODyS asteroid-tracking center at the University of Pisa in 
Italy. NASA also has partnered with the U.S. Air Force to share tracking data 
about near-Earth objects. Just this week, a $25 million Canadian-built 
satellite known as NEOSSat was launched to look for small asteroids in 
Earth-threatening orbits.

 o Bring the world's space agencies together in a new working group called the 
Space Mission Planning and Advisory Group - also known as SMPAG (pronounced 
like "Same Page"). The group's purpose, Johnson said, would be to "get all the 
agencies on the 'same page' as far as assessing what capabilities could be 
brought to bear should there be a threatening asteroid detected."

 o Put asteroid experts in contact with countries around the world, to advise 
disaster response agencies about the nature of a potential impact event - that 
is, 
the area expected to be affected by the event, the potential impact and the 
scale 
of a potential evacuation. "It's an offshoot of the warning network," Johnson 
said. 
If the asteroid behind the Russian meteor had been detected in advance, for 
example, the expert network might have advised emergency workers about 
the potential for a midair blast and the resulting shock wave (although 
Johnson said he was "surprised" by the shock wave's effect).  Until last 
year, NASA spent about $4 million a year to track near-Earth objects, 
or NEOs, and Johnson said the program "has accomplished quite a bit in 
the relatively short time that it's been in existence." About 95 percent 
of the potentially threatening asteroids bigger than a kilometer (half-mile) 
wide have been detected. However, now NASA is working on charting the 
asteroids down to a width of 100 meters (330 feet). To fund that more 
difficult task, the annual funding level for NEO research was raised to 
$20 million a year.
 
NASA is using that money to beef up its capabilities for spotting smaller 
asteroids, through programs such as the Asteroid Terrestrial-impact Last Alert 
System, or ATLAS, which is due to get $5 million over the next five years. 
But less than a million dollars a year is going toward studies aimed at 
figuring out what to do if a threatening asteroid is found, Johnson  said. 
The potential strategies range from diverting it gently with the aid of 
gravity tractors or space paintball 

[meteorite-list] AD: Imilac, Zaklodzie, Rumuruti

[valparint]

Dear List Members,

I have a few new items on ebay - a 32 gram Imilac slice, a 2.2 gram Zaklodzie, 
and 2 gram NWA 2943 Rumuruti. You can see them at

http://www.ebay.com/sch/pas520/m.html

I have other Zaklodzies and NWA 2943 pieces on my web site

www.tucsonmeteorites.com

Thanks for looking.

Paul Swartz
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] "Rain" on the sun

[Don Merchant]

Thanks Mike for bringing it to my attention! Really incredible.
Sincerely
Don Merchant
- Original Message - 
From: "Michael Blood" 

To: "Meteorite List" 
Sent: Tuesday, February 26, 2013 4:35 PM
Subject: Re: [meteorite-list] "Rain" on the sun




This makes for a fascinating viewing (especially after about 20 seconds 
in):


http://apod.nasa.gov/apod/ap130226.html


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list 


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] AD- Auctions Ending - Many Lasts

[Adam Hupe]

Dear List Members,

I have 36 auctions ending tonight.  All were started at just 99 cents with no 
reserve. Many are the last pieces I have prepared in inventory.  I will not be 
preparing or restocking many of these so once they are gone, they will no 
longer be available, at least from me.  I am trying to reduce the number of 
meteorite auctions per week in an effort to diversify into more stable markets 
like minerals, exceedingly rare Native American artifacts and shipwreck 
treasure.

I use to run 72 meteorites per week and I am quickly reaching my goal of just 
24.  If it were all about money, I would have ceased selling a long time.  Huge 
increase in federal taxes, new ridiculous hidden taxes in the Affordable Health 
Care Act, gasoline and everything related to it and shipping have really take a 
bite out of already tight margins. I will be dropping American finds first and 
then most witnessed falls, however I will continue to run planetary specimens.

Link to all auctions:
http://shop.ebay.com/raremeteorites!/m.html


Thank you for looking and if you are bidding, good luck.

Best Regards,

Adam
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] "Rain" on the sun

[Michael Blood]

This makes for a fascinating viewing (especially after about 20 seconds in):

http://apod.nasa.gov/apod/ap130226.html 


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] two fireballs

[Joshua Tree Earth & Space Museum]

BAM!

Phil Whitmer
Joshua Tree Earth & Space Museum
- Original Message - 
From: "Jodie Reynolds" 

To: "Steve Dunklee" 
Cc: 
Sent: Monday, February 25, 2013 11:01 PM
Subject: Re: [meteorite-list] two fireballs


Hello Steve,

I have more than 70 patents in the space in nineteen countries.
I'm the Chief Technology Officer for a company that designs and sells
digital video surveillance equipment -- I sell close to 30,000 systems a 
year.


My masters degrees are in mathematics and electrical engineering with
an emphasis on optical physics, and I've been in the digital video
space inventing compression algorithms for more than two dozen years.

So, yeah, let's go ahead and investigate my "snow job", shall we?


Most cheap dash cameras being imported now are 1080p/30.  1080p/20 is a
favored option to maximize SD card usage.  They differ from ATSC in
that they don't generally support 1080p/60.

For Example:
http://www.amazon.com/1080P-Dashboard-Camera-Accident-Vision/dp/B0099KGDQ2
http://www.rakuten.com/prod/new-real-hd-1080p-h264-5m-car-dashboard-camera-recorder-accident-dvr/225640553.html?listingId=174887992
http://www.espow.com/product_info.php?products_id=50672¤cy=USD&gsc=googleshopping&gclid=CMfrtJmH07UCFYKDQgodMSoAAQ

http://www.ebay.com/itm/Full-Car-DVR-HD-1080P-Cam-Recorder-Camcorder-Vehicle-Dashboard-Camera-F900LHD-/251182177426?pt=US_Surveillance_Digital_Video_Recorders_Cards&hash=item3a7b9fdc92
http://www.ebay.com/itm/Car-DVR-HD-1080P-Cam-Recorder-Camcorder-Vehicle-Dashboard-Camera-Hot-Sale-/330840799556?pt=US_Surveillance_Digital_Video_Recorders_Cards&hash=item4d07a5f944
http://www.ebay.com/itm/GPS-FULL-HD-1080P-Car-Camera-DVR-GPS-Logger-Vehicle-Black-Box-Video-Recorder-/320741840995?pt=US_Surveillance_Digital_Video_Recorders_Cards&hash=item4aadb41863


No dash cameras have been produced for public consumption at sub-D1
in at least five years.  Mobile DVRs will often offer CIF for
multiple channel recording however (a limitation of the NTSC or PAL
scan converter).

640x280 is a non-existent format, as that would be 0.4375, not ending
on a byte boundary.  You're thinking of 240 lines. And it wouldn't be
640 (square pixels), it would be 704.  Or perhaps you're thinking of
SIF in a 525 line domain, which would be 352x240, or CIF in the 625
line domain (352x288).

The container format was, in fact, MP4.  The codec used for
compression was AVC.  AVC is aka MPEG4 AVC (Advanced Video Codec),
which is also known as h.264 **see below.

The original submitted video was 1080p.  Youtube has offered 1080p
since 2009. 
http://youtube-global.blogspot.com/2009/11/1080p-hd-comes-to-youtube.html


We can see the offered streams from youtube as/per:
http://www.spaceballoon.org/available-streams.jpg


There is no such video container or codec as "pmg" that I'm aware of -
Would you provide the FOURCC for that?

My stills are in PNG (Portable Network Graphics) as I noted
originally.  __MPG__ is the Motion
Pictures expert Group [of which I've been a member off-and-on as well
as on several working groups over the years), and MPEG1, MPEG2, MPEG4, MPEG 
AVC (aka h.264,
aka MPEG7 aka MPEG4 Layer 7, etc.) are all possible with additional 
qualifications of things

such as differing levels of motion prediction, different transport
layers, and different containers.



Now, would you like to say anything else incredibly stupid, or would
you like to apologize for attacking me in your blind ignorance and we
can just let it go?




**Format   : MPEG-4
Format profile   : Base Media / Version 2
Codec ID : mp42
File size: 348 MiB
Duration : 10mn 1s
Overall bit rate mode: Variable
Overall bit rate : 4 860 Kbps
Encoded date : UTC 2013-02-14 04:06:40
Tagged date  : UTC 2013-02-14 04:06:40
gsst : 0
gstd : 601210
gssd : BADC23F61HH1361841351562120
gshh : r1---sn-p5qlsn7z.c.youtube.com

Video
ID   : 1
Format   : AVC
Format/Info  : Advanced Video Codec
Format profile   : High@L4.0
Format settings, CABAC   : Yes
Format settings, ReFrames: 1 frame
Format settings, GOP : M=1, N=40
Codec ID : avc1
Codec ID/Info: Advanced Video Coding
Duration : 10mn 1s
Bit rate : 4 714 Kbps
Maximum bit rate : 9 011 Kbps
Width: 1 920 pixels
Height   : 1 080 pixels
Display aspect ratio  

Re: [meteorite-list] Chelyabinsk 1.8 kg mass found

[MEM]

Kudos to all for not calling this the "Main mass".  It is the current largest 
"known" mass and we should keep the discussion that way.

Speaking of: in one photo it looked as if some welding of other individual 
masses might have occurred.  I hope we get more detailed photos.

Multiple "way-to-gos"  to the many unsung list members who've approached this 
with the scientific moxie of healthy skepticism and allowed up a change of 
documentation of events and videos.  


Thank you all!
Elton
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] "Calculating the destruction of all life"

[STUART FORBES]

A British MP has just posted this on Twitter and its an interesting read:

http://blog.nationalarchives.gov.uk/blog/calculating-the-destruction-of-all-life/

Its a study by the UK Atomic Energy Authority in 1980 on the subject of large 
asteroid impacts.
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Chelyabinsk Gripped By 'Meteor Fever'

[Ron Baalke]

http://www.bbc.co.uk/news/world-europe-21554326

Chelyabinsk gripped by 'meteor fever'
By Oxana Vozhdaeva and Oleg Boldyrev, BBC Russian Service, Chelyabinsk region
BBC News
February 26, 2013

Russia's Chelyabinsk region is gripped by a kind of meteor fever, with 
thousands combing through fields trying to find meteorite fragments.

Near the villages of Deputatsky and Pervomaysky, an hour's drive from 
Chebarkul city, whole families of meteorite hunters are hard at work.

The meteorite passed over the area before reportedly crashing into the 
Chebarkul lake, and the snowy fields are covered with human footprints.

The nearby home of the Belizkaya family was filled with soot from their 
oven after the meteorite explosion, which caused the ceiling to crack.

Initially frightened, now the family calls that day their "rebirth", and 
have so far found three 1cm-wide meteorite fragments.

"We came with all the family, we do it out of interest, really, this is 
such a memento of that event," says Elena Belizkaya of the hoard. "We'll 
keep it at home for now, but if there's a chance to sell it, we'll sell some, 
of course!"

Meteorite hunters require no particular expertise as the hunt is relatively 
simple - fragments leave a small crater similar to a mouse's hole. If you 
find such a hole in a bank of snow you can be fairly certain - it is either 
a mouse or a meteorite.

The BBC team found four tiny stones within five minutes. Most of those 
fragments found near Deputatsky are pea-sized, but some can be much bigger - 
more like golf balls.

The biggest fragment we saw weighed about 100g. It was found by a citizen 
of Chelyabinsk, who said he had received several offers from friends in 
Moscow.

"It's like hunting or fishing," said one meteorite hunter. "When you see an 
animal, your heart starts to beat fast, and when you're fishing - it's like 
pulling the fishing rod and thinking there's something extraordinary. This 
is the same - you see a tiny hole, try it, and here it is."

Scientists from the meteorite laboratory at the Russian Academy 
of Science collecting samples in Chelyabinsk say the more meteorite hunters 
the merrier, because there are only a couple of days of good weather left 
for the search.

Any wind or snowfall will destroy meteorite traces, and small fragments will 
simply not be found until the spring, when the fields will be covered by 
tall grass.

The minerals of which the meteorite is made are common and not of great 
interest, says junior research associate Dmitry Sadilenko.

But size matters. The Chebarkul space rock was one of the biggest objects 
to break up in our atmosphere in 100 years. And the bigger the fragment 
found, the more it is worth.

What's more, according to Russia's Subsoil Law, there are no legal grounds 
for prohibiting people from collecting, selling and exporting meteorite 
fragments.

However, potentially lucrative finds are already raising eyebrows. The 
internet is full of ads selling so-called fragments of the Chebarkul 
meteorite, with prices ranging from a few thousand to 500,000 roubles 
(£11,000).

The Chelyabinsk police department has already questioned one "businessman" - 
a resident of Emanzhelinka village - who has sold several fragments for 
15,000 roubles. He could be charged with fraud if the stones are found to be 
fake.

Lucrative hole in the ice

Although scientists from the Ural Federal University have declared Chebarkul 
Lake to be the location of the main meteorite fall - suggesting a fragment 
as wide as 50cm may be lying on the lake bed - the Chelyabinsk authorities 
say they cannot confirm this.

Chelyabinsk deputy governor Igor Murog told the BBC that the large ice-hole 
thought to have been made by the meteorite could equally have been made by a 
fisherman.

Locals charge the price of an expensive Moscow taxi ride to take meteorite 
hunters to the Chebarkul lake ice hole Meteor hunters, though, seem not to 
care about official statements: Many are drilling holes in the ice and 
lowering magnets attached to ropes into the water. For now they are finding 
mostly tiny fragments.

Even Chebarkul Mayor Andrey Orlov joined in the hunt, sending divers into the 
lake's cold water soon after the meteorite fell, only for their mission to be 
thwarted by silt on the lake-bed. The hunt will continue on Monday.

He has announced a competition for business ideas as Chebarkul tries to profit 
from the global attention given to its meteorite landing.

And locals are already cashing in, offering to shuttle visitors to the site 
of the now-famous ice-hole via horse and cart - for the price of an expensive 
Moscow taxi fare.


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] What Exploded over Russia?

[Ron Baalke]

http://science.nasa.gov/science-news/science-at-nasa/2013/26feb_russianmeteor/  


What Exploded over Russia?
NASA Science News

Feb. 26, 2013:  When the sun rose over Russia's Ural Mountains on
Friday, Feb. 15th, many residents of nearby Chelyabinsk already knew
that a space rock was coming. Later that day, an asteroid named 2012
DA14 would pass by Earth only 17,200 miles above Indonesia. There was no
danger of a collision, NASA assured the public.

Maybe that's why, when the morning sky lit up with a second sun and a
shock wave shattered windows in hundreds of buildings around
Chelyabinsk, only a few people picking themselves off the ground figured
it out right away. This was not a crashing plane or a rocket attack.

"It was a meteor strike--the most powerful since the Tunguska event of
1908," says Bill Cooke of NASA's Meteoroid Environment Office.

In a coincidence that still has NASA experts shaking their heads, a
small asteroid completely unrelated to 2012 DA14 struck Earth only hours
before the publicized event. The impactor flew out of the blue,
literally from the direction of the sun where no telescope could see it,
and took everyone by surprise.

"These are rare events and it is incredible to see them happening on the
same day," says Paul Chodas of NASA's near-Earth Object Program at JPL.

Researchers have since pieced together what happened. The most telling
information came from a network of infrasound sensors operated by the
Comprehensive Test Ban Treaty Organization (CTBTO). Their purpose is to
monitor nuclear explosions.

Infrasound is a type of very low-frequency sound wave that only
elephants and a few other animals can hear. It turns out that meteors
entering Earth's atmosphere cause ripples of infrasound to spread
through the air of our planet. By analyzing infrasound records, it is
possible to learn how long a meteor was in the air, which direction it
traveled, and how much energy it unleashed.

The Russian meteor's infrasound signal was was the strongest ever
detected by the CTBTO network. The furthest station to record the
sub-audible sound was 15,000km away in Antarctica.

Western Ontario Professor of Physics Peter Brown analyzed the data: "The
asteroid was about 17 meters in diameter and weighed approximately
10,000 metric tons," he reports. "It struck Earth's atmosphere at 40,000
mph and broke apart about 12 to 15 miles above Earth's surface. The
energy of the resulting explosion exceeded 470 kilotons of TNT." For
comparison, the first atomic bombs produced only 15 to 20 kilotons.

Based on the trajectory of the fireball, analysts have also plotted its
orbit. "It came from the asteroid belt, about 2.5 times farther from the
sun than Earth," says Cooke.

Comparing the orbit of the Russian meteor to that of 2012 DA14, Cooke
has shown that there is no connection between the two. "These are
independent objects," he says. "The fact that they reached Earth on the
same day, one just a little closer than the other, appears to be a
complete coincidence."

Infrasound records confirm that the meteor entered the atmosphere at a
shallow angle of about 20 degrees and lasted more than 30 seconds before
it exploded. The loud report, which was heard and felt for hundreds of
miles, marked the beginning of a scientific scavenger hunt. Thousands of
fragments of the meteor are now scattered across the Ural countryside,
and a small fraction have already been found.

Preliminary reports, mainly communicated through the media, suggest that
the asteroid was made mostly of stone with a bit of iron--"in other
words, a typical asteroid from beyond the orbit of Mars," says Cooke.
"There are millions more just like it."

And that is something to think about as the cleanup in Chelyabinsk
continues.

Author: Dr. Tony Phillips 
Production editor: Dr. Tony Phillips
Credit: Science@NASA


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] Special Session at EWASS 2013: Rocks In Our Solar System - Bridging the Gap Between Meteor, Meteorite and Asteroid Studies

[Ron Baalke]

http://www.physics.helsinki.fi/conf/EWASS2013

European Week of Astronomy and Space Science - EWASS 2013
8 - 13 July 2013, Logomo Centre, Turku, Finland

Special Session Sp11 (Friday, July 12, 2013)

Rocks in our Solar System - bridging the gap between meteor, meteorite
and asteroid studies

Conveners:
Tomas Kohout
Maria Gritsevich

Scope:

The session will bring together scientists working on all aspects of
Solar System rocky material properties. The topic includes laboratory
analysis of meteorites and cosmic dust as well as observations and
modeling of both meteoroids and asteroids. The contributions bridging
the gap between properties of meteors, meteorites and asteroids are
highly welcome.

The session will also focus on recent Chelyabinsk fireball / Chebarkul
meteorite fall event in order to put together knowledge acquired from
studies of fireball trajectory, orbital analysis, and recovered meteorites.
 

Abstract submission:

Abstract submission, registration, and conference programme is available
on EWASS 2013 main page .


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] 10th Low-Cost Planetary Mission Conference (LCMP-10)

[Ron Baalke]

http://lcpm10.caltech.edu/

10th Low-Cost Planetary Mission Conference (LCMP-10)
followed by Theodore von Karman Symposium
June 18-20, 2013 & June 21, 2013
Pasadena California

Welcome

We are pleased to announce the 10th International Academy of
Astronautics (IAA) Low-Cost Planetary Missions
Conference, LCPM-10, to be held on the campus of the California
Institute of Technology (Caltech) in the heart
of beautiful Pasadena, California, on June 18-20, 2013. 

The focus of the 10th Low-Cost Planetary Missions Conference is on
missions characterized by those of NASA's Discovery program and ESA's
Cosmic Visions Medium-Class program.  These missions of scientific
exploration are conducted at a fixed cost that includes spacecraft and
science payload development, launch, operations, science data analysis,
and all relevant mission-specific technology development.  Other
relevant examples of low-cost planetary missions include JAXA's
Hayabusa-1 mission and ISRO's Chandrayaan-1 mission.

The conference is a forum for planetary scientists, technologists,
engineers, project managers and agency officials to gather for the
exchange of information and ideas for making this class of robotic
mission richer scientifically while remaining affordably low-cost.  The
conference will be conducted fully in sequential plenary sessions,
augmented by one or more poster sessions. Please follow the links to the
left for further information.


von Karman Symposium

LCPM-10 will be followed on June 21, 2013, by an IAA-sponsored symposium
celebrating the life and many accomplishments of Theodore von Karman.
The von Karman symposium will also to be held on the
Caltech Campus in Pasadena.

__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

[meteorite-list] AD: Ensisheim, LA002, Bonita Springs, Barwell, Honolulu, Valera & many more meteorites being sold on ebay today !

[Shawn Alan]

Hello Listers 

Thank you for taking a look at my post of meteorites 
I have for sale on eBay. Here is your chance to own some rare and historic 
meteorites. Please take a look and if you have any questions or OFFERS 
& /or TRADES, please email me and I'll get back with you. Lastly, if you are 
looking for bigger/smaller meteorites, let me know too.  A meteorite is a 
meteorite, but a meteorite with history & legacy, will always add aura 
to your meteorite collection and value.

eBay Store
http://www.ebay.com/sch/imca1633ny/m.html

Feature Auctions

STANNERN historic meteorite fall-1808 very important and rare HED meteorite fall
http://www.ebay.com/itm/261175477356?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

HONOLULU meteorite fall from 1825 1st Hawaii meteorite fall - Extremely rare!
http://www.ebay.com/itm/251234258957?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

BLACK BEAUTY / NWA 7034 Martian/Mars meteorite - The H20 meteorite - NEW CLASS!
http://www.ebay.com/itm/251234261235?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

SENA meteorite 1st fall from Spain from 1773 VERY RARE HISTORIC fall!
http://www.ebay.com/itm/261175474775?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

LEIGHLINBRIDGE meteorite fall 1999 - TKW 271g from Ireland. Super Rare.
http://www.ebay.com/itm/261175485325?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

PASAMONTE meteorite fall 1933 1st fireball caught on film - Extremely Rare! USA
http://www.ebay.com/itm/261175464280?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

SERES meteorite 1818 1st and only meteorite from Greece SUPER RARE! 
http://www.ebay.com/itm/251235031403?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649


ENSISHEIM historic meteorite fall from 1492 - 1st fall from France - Very Rare
http://www.ebay.com/itm/251234260179?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

LIMERICK meteorite historic Ireland 1813 - Super Rare-Super Hard to Acquire!
http://www.ebay.com/itm/261174757133?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

BERLANGUILLAS historic 79mg meteorite-Fell in 1811 Spain-1440g TKW Super Rare
http://www.ebay.com/itm/251234257840?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

CHANTONNAY meteorite fell in 1812 in France. Very rare and hard to find stone!
http://www.ebay.com/itm/261174748762?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

BONITA SPRINGS found among skeletons in 1938 in FL USA Rare meteorite
http://www.ebay.com/itm/251234253375?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

Shawn Alan 
IMCA 1633 
eBay Store
http://www.ebay.com/sch/imca1633ny/m.html
http://meteoritefalls.com/ 
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Minor Planet families

[Graham Ensor]

Thanks to everybody for their enlightening posts on this
questionanswering many aspects that I had wondered aboutan
interesting thread.

Graham

On Tue, Feb 26, 2013 at 2:59 PM, Chris Peterson  wrote:
> To elaborate on Rob's and Larry's comments, a further complication is that
> asteroids are placed into classes based on two major criteria: orbit and
> composition. The orbital classifications (like Apollo) are mainly determined
> by ratios of specific orbital elements. The compositional classes are
> primarily determined by spectral characteristics, and are often the classes
> of most interest to meteorite enthusiasts, given the ability to connect many
> meteorites to specific asteroid spectral families (e.g. V type asteroids are
> associated with HED meteorites). Only in a handful of cases do we have a
> recovered orbit for a meteorite fall, allowing for the possibility of
> recognizing the parent body's orbital classification as well.
>
> Chris
>
> ***
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> On 2/26/2013 4:26 AM, lebof...@lpl.arizona.edu wrote:
>>
>> Hi Graham:
>>
>> I am far from an asteroid dynamics person, but many (but not all) asteroid
>> families tend to share compositional similarities and so may very well be
>> remnants of larger objects that have "recently" been broken up in a
>> collisional event. The families are usually (but not always) named for
>> their largest member. This is important in that if members of these
>> families are in the "right place" in the asteroid belt, their members'
>> orbits may be perturbed over time into Earth-crossing orbits and then
>> Earth-impacting orbits, so that they may be the sources of some of the
>> meteorites we see.
>>
>> Connecting individual asteroids to classes of meteorites is another story!
>>
>> Larry
>
>
> __
>
> Visit the Archives at http://www.meteorite-list-archives.com
> Meteorite-list mailing list
> Meteorite-list@meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Minor Planet families

[Chris Peterson]

To elaborate on Rob's and Larry's comments, a further complication is 
that asteroids are placed into classes based on two major criteria: 
orbit and composition. The orbital classifications (like Apollo) are 
mainly determined by ratios of specific orbital elements. The 
compositional classes are primarily determined by spectral 
characteristics, and are often the classes of most interest to meteorite 
enthusiasts, given the ability to connect many meteorites to specific 
asteroid spectral families (e.g. V type asteroids are associated with 
HED meteorites). Only in a handful of cases do we have a recovered orbit 
for a meteorite fall, allowing for the possibility of recognizing the 
parent body's orbital classification as well.


Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 2/26/2013 4:26 AM, lebof...@lpl.arizona.edu wrote:

Hi Graham:

I am far from an asteroid dynamics person, but many (but not all) asteroid
families tend to share compositional similarities and so may very well be
remnants of larger objects that have "recently" been broken up in a
collisional event. The families are usually (but not always) named for
their largest member. This is important in that if members of these
families are in the "right place" in the asteroid belt, their members'
orbits may be perturbed over time into Earth-crossing orbits and then
Earth-impacting orbits, so that they may be the sources of some of the
meteorites we see.

Connecting individual asteroids to classes of meteorites is another story!

Larry


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list

Re: [meteorite-list] Minor Planet families

[lebofsky]

Hi Graham:

I am far from an asteroid dynamics person, but many (but not all) asteroid
families tend to share compositional similarities and so may very well be
remnants of larger objects that have "recently" been broken up in a
collisional event. The families are usually (but not always) named for
their largest member. This is important in that if members of these
families are in the "right place" in the asteroid belt, their members'
orbits may be perturbed over time into Earth-crossing orbits and then
Earth-impacting orbits, so that they may be the sources of some of the
meteorites we see.

Connecting individual asteroids to classes of meteorites is another story!

Larry

> Hi Graham,
>
>> Thanks Robso the named groups at the moment just represent similar
>> orbiting asteroids which over time have settled into that orbit over
>> time after they were nudged from the asteroid belt ...
>
> The "asteroid belt" is a pretty broad term. Between the orbits of Mars
> and Jupiter are over a dozen major named families (e.g. Cybele, Eos,
> Eunomia, Flora, Hilda, Hungaria, Koronis, Maria, Nysa, Phocaea, Themis,
> Main Belt I, Main Belt II, Main Belt IIb, Main Belt IIIa, Main Belt IIIb).
> It's
> not unlike the naming of different meteorite groups: just as all
> H-chondrites
> share common features, each asteroid family has a particular combination
> of orbital elements (semi-major axis and inclination are the primary
> determinants of a minor planet's family) that distinguish it from its
> neighbors.
>
> --Rob
>
> __
>
> Visit the Archives at http://www.meteorite-list-archives.com
> Meteorite-list mailing list
> Meteorite-list@meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>


__

Visit the Archives at http://www.meteorite-list-archives.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list