Re: [meteorite-list] Meteoroid lands in Stirling area

2014-05-07 Thread Matson, Rob D. via Meteorite-list
Hi Shawn/List, A few oddities in that article (which is often the case in science articles written for general consumption). The first is the title: Meteoroid lands in Stirling area This is misleading on two fronts. It may or may not have made it to the ground (as is made clear in the body of

Re: [meteorite-list] Brewery Creates Beer Made From Meteorites

2014-05-16 Thread Matson, Rob D. via Meteorite-list
Leave it to snake-oil-salesman Sam to merge my two favorite hobbies! I'm surprised he didn't come up with something like this earlier... --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Shawn Alan via Meteorite-list Sent:

[meteorite-list] Confusion between two Ontario, Canada meteors in 2014

2014-06-04 Thread Matson, Rob D. via Meteorite-list
Hi Mike, Just to confuse things further, I was mixing up the 18 March St. Thomas meteor with the more recent (4 May) Codrington, Ontario meteor. The *Codrington* one was the one east of Toronto that might be on radar. My thanks to Rob Catlin for correcting me and pointing out that St. Thomas is

Re: [meteorite-list] [IMCA List] New Book / Atlas of Meteorites

2014-06-05 Thread Matson, Rob D. via Meteorite-list
Hi Graham, Wow -- I had no idea Richard's book was going for so much now. And there is only a single, lightly used copy (with some marking/highlighting) on eBay right now at $329.44. If someone needs a copy, I have one spare one in excellent condition that I'd be willing to part with for

[meteorite-list] Meteorite falls, NEXRAD changes and recovery rates

2014-08-07 Thread Matson, Rob D. via Meteorite-list
Hi Anne, Thanks for the shout-out regarding meteorite recovery via all-sky camera triangulation and Doppler radar. I have some bad news as far as the radar angle that I thought I would share, which may help explain some of the recent downturn in meteorite recovery rates -- at least in the U.S.

Re: [meteorite-list] Ice-rafted rocks on dry-lakes

2014-08-29 Thread Matson, Rob D. via Meteorite-list
Hi Bob, Yes -- it's nice to have vindication that the theory we (you, Nick Gessler, Paul Gessler and I) published 12 years ago was the right one! http://www.lpi.usra.edu/meetings/metsoc2002/pdf/5263.pdf http://meteorite-recovery.tripod.com/2006/mar06.htm --Rob -Original Message-

Re: [meteorite-list] CO WY Meteor Approx. 2230 MDT 02SEP2014 long duration/fragmentation

2014-09-04 Thread Matson, Rob D. via Meteorite-list
Hi Shawn/All, ~Something~ definitely came in over Colorado on 2 September around 10:30 pm MDT. The long duration and general flight direction (SSW -- NNE) suggested large space junk reentry. And indeed, the beautiful radar signature that lasts for over a half hour looks just like that of past

Re: [meteorite-list] A Managua, Nicaragua meteorite?

2014-09-09 Thread Matson, Rob D. via Meteorite-list
Hi Marco: your hypothesis is far more reasonable than a meteorite-caused impact pit. --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Marco Langbroek via Meteorite-list Sent: Tuesday, September 09, 2014 12:01 AM To:

Re: [meteorite-list] A Managua, Nicaragua meteorite?

2014-09-09 Thread Matson, Rob D. via Meteorite-list
. However, if you read what CNN has to say, they've already determined it's from a meteorite (sheesh!): http://www.cnn.com/2014/09/08/tech/innovation/nicaragua-meteorite/index.html?hpt=hp_t2 Michael in so. Cal. On Tue, Sep 9, 2014 at 10:40 AM, Matson, Rob D. via Meteorite-list meteorite-list

[meteorite-list] Cosmos 2495 reentry on NBC Nightly News Thursday Night

2014-09-19 Thread Matson, Rob D. via Meteorite-list
Hi All, Imagine my surprise when I saw my Google Earth Doppler radar composite of the September 2nd Cosmos 2495 reentry over Colorado and Wyoming pop up as one of the graphics in Brian Williams' top story on the NBC Nightly News tonight. ;-) The story wasn't completely accurate -- Brian reported

Re: [meteorite-list] 10.04.14 AZ Daytime Fireball: Direct compass measurements

2014-10-11 Thread Matson, Rob D. via Meteorite-list
Hi Steve/All, First off, I want to thank you for having an all-sky camera that was operating during the daytime and captured this event. As far as I know, it is the only image/video record of the 4 October fireball itself, though of course there are many images of the smoke trail clouds. Without

[meteorite-list] October 4th fireball northeast of Flagstaff

2014-10-11 Thread Matson, Rob D. via Meteorite-list
Hi All, Sorry for the premature end -- fat-fingered the send key apparently. Continuing: Steve was also good enough to travel out to the Bellemont NWS site that took an image of the smoke trails several minutes after the fireball. He wrote: Yesterday at Bellemont Weather Station right under and

Re: [meteorite-list] Texas Fireball on CNN

2014-11-09 Thread Matson, Rob D. via Meteorite-list
Unfortunately, nothing on any of the five closest radars to the fall location. --Rob From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of Michael Farmer via Meteorite-list [meteorite-list@meteoritecentral.com] Sent: Sunday,

Re: [meteorite-list] Texas Fireball on CNN

2014-11-09 Thread Matson, Rob D. via Meteorite-list
? Graham On Sun, Nov 9, 2014 at 10:19 PM, Matson, Rob D. via Meteorite-list meteorite-list@meteoritecentral.com wrote: Unfortunately, nothing on any of the five closest radars to the fall location. --Rob From: Meteorite-list [meteorite-list-boun

Re: [meteorite-list] Texas Fireball on CNN

2014-11-09 Thread Matson, Rob D. via Meteorite-list
to be firmly within Texas. I don't think I'll have time to look at that one tonight... --Rob From: Meteorite-list [meteorite-list-boun...@meteoritecentral.com] on behalf of Matson, Rob D. via Meteorite-list [meteorite-list@meteoritecentral.com] Sent: Sunday

Re: [meteorite-list] Any news from the [Mexico] November 8th Bolide?

2014-11-15 Thread Matson, Rob D. via Meteorite-list
Hi Mike, It terminated over Mexico, thus the probable lack of follow-up news. I have a pretty solid 3D trajectory, and it remained supersonic quite deep into the atmosphere. There are almost certainly meteorites on the ground, but I doubt you'll find too many people interested in risking their

[meteorite-list] Meteorites with amino acids

2014-11-18 Thread Matson, Rob D. via Meteorite-list
Amino acids have been found in the following meteorites of which I'm aware: Murray (CM2) Murchison (CM2) Tagish Lake (C2 ungrouped) Almahata Sitta (anomalous ureilite) Sutter's Mill (CM2) Allan Hills 77306 (CM2) Allan Hills 83100 (CM2) Asuka 88120 (CM2) Asuka 881334 (CM2) Lewis Cliffs 90500 (CM2)

[meteorite-list] OT: Google broken?

2014-12-17 Thread Matson, Rob D. via Meteorite-list
Hi All, Thought my internet connection was down, but have determined it's just Google that's suddenly not working. You can go to their website, but none of the links for your search results will work. First time I've ever seen this... --Rob __ Visit

[meteorite-list] Meteorite prices as a gauge of economic health

2014-12-23 Thread Matson, Rob D. via Meteorite-list
To make this discussion a little more meteorite-specific, in a truly healthy economy meteorites could not be purchased for the low prices they currently command. The economy is doing fine if your gauge of the economy is the stock market. If you're wealthy, you're probably having a good year. But

Re: [meteorite-list] Huh? PhD has a Meteor? over Houston, TX? Looks like an aircraft contrail to me.

2015-01-21 Thread Matson, Rob D. via Meteorite-list
This one is a no-brainer -- jet contrail. It's dumbfounding why anyone would think an object traveling that slowly could be anything other than a plane. Slow news day in Houston? --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf

Re: [meteorite-list] Sao Paulo Meteorite/s Recovered from 09JAN2015 Daytime Event!

2015-01-19 Thread Matson, Rob D. via Meteorite-list
Hi Andre/Dirk, I was going to say after looking at the excellent images -- how in the world did they find it in that terrain?! The witness(es) must have been very close indeed. Nice looking stone. --Rob From: Meteorite-list

Re: [meteorite-list] Chinese Rocket Body Disintegrates over North America

2015-02-24 Thread Matson, Rob D. via Meteorite-list
Hi Ron/All, As with Cosmos 2495 last year, I spent several hours this morning pulling Doppler data from a dozen radars within range of last night's reentry. Unlike bolides of late, reentries have been showing up great on radar, and this one was no exception. I don't know if the CZ-4B rocket

[meteorite-list] Slow fireball over Flagstaff on 2/18/2015

2015-02-20 Thread Matson, Rob D. via Meteorite-list
Hi All, Randomly checking the NMSU site for recent fireballs, I noticed that Steve Schoner's camera picked up a bright, slow-moving one Wednesday during evening twilight: http://skysentinel.nmsu.edu/allsky/viewer/1355276 Notice that the fireball is actually *rising* in elevation angle as it

Re: [meteorite-list] Link between the potentially hazardous Asteroid (86039) 1999 NC43 and the Chelyabinsk meteoroid tenuous

2015-03-27 Thread Matson, Rob D. via Meteorite-list
Hi Shawn, The presumed association between Chelyabinsk and (86039) 1999 NC43 is dependent on whose computed orbit you believe for Chelyabinsk. If you use the Popova-Jenniskens-Emel'yanenko-et al orbit, (86039) is not a bad match, though the orbital inclinations differ by 2.2 degrees. Of the dozen

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

2015-05-04 Thread Matson, Rob D. via Meteorite-list
Tatahouine would have been the perfect meteorite for today's Picture of the Day (Star Wars Day). ;-) --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Paul Swartz via Meteorite-list Sent: Monday, May 04, 2015 12:00 AM To:

Re: [meteorite-list] Houston, We Have GEOLOGY!

2015-07-15 Thread Matson, Rob D. via Meteorite-list
Hi Mike, Sterling was a victim of character line limits for the mailing list. Editing the links so that they're all on the same line works. Might try angle brackets around it to see if Met-List will keep the link together, e.g.:

[meteorite-list] Witness information that is more helpful than color

2015-11-04 Thread Matson, Rob D. via Meteorite-list
Hi John, I think there are definitely things that can be learned by looking at the spectroscopy of fireball emissions, but of course such data are rare. And human eyeballs/brains are a poor substitute. We don't have the necessary spectral resolution, and of course the optical response is far

Re: [meteorite-list] Key Capital Announces Major Potential Meteorite Mining Opportunity Joint Ventured

2015-12-03 Thread Matson, Rob D. via Meteorite-list
Hi Larry, It all sounds very fishy to me: "The orebody located on the property is well known as a magnetite resource having been the subject of extensive historic exploration since the 1960s. In recent years, through identification of extraordinary high-grade iridium in samples, it became

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

2016-06-23 Thread 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

Re: [meteorite-list] 6th Annual Eating Your Way Around Tucson - 2016

2016-01-11 Thread Matson, Rob D. via Meteorite-list
Hi All, Al's post about BJ's Brewery reminded me that I wanted to ask Tucson locals whether they would recommend any of these Brewpubs: Thunder Canyon Brewery -- 220 E. Broadway Blvd. (520) 396-3480 Barrio Brewing Company -- 800 E. 16th St. (520) 791-2739 Borderlands Brewing Company -- 119 E.

[meteorite-list] Case study: Lake Eyre meteorite vs. U.S.

2016-01-18 Thread Matson, Rob D. via Meteorite-list
Hi Ian, Since you brought up the Creston fall, presumably as a comparison example against current Australian state policies, I feel some counter-commentary is appropriate. > Creston is a example of where things went a bit pair shaped in my mind for > science. In my opinion, Creston was

[meteorite-list] Couple loans unexpected find to UCLA Meteorite Gallery

2016-06-27 Thread 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

[meteorite-list] Update on yesterday morning's bolide

2016-02-12 Thread Matson, Rob D. via Meteorite-list
Correction to my post yesterday: now that there are two dashcam videos of the event (one from Hollywood, the other from Oceanside), it is clear that the Pacific Ocean bolide yesterday morning was much further south. The terminal lines of sight intersect at 30d 42.5' N, 118d 24.5' W, over 120

[meteorite-list] Pacific Ocean bolide

2016-02-11 Thread Matson, Rob D. via Meteorite-list
Hi Michael -- yes, it ended up in the drink. I've got it on Santa Ana radar (KSOX) near "Fortymile Bank" at an altitude of 11.3 km at 14:39:03 UT (6:39:03 am PST). Missed the SoCal coast by about 70 km. :-( --Rob -Original Message- From: Meteorite-list

[meteorite-list] NE Florida daytime fireball on 24 January 2016

2016-01-28 Thread Matson, Rob D. via Meteorite-list
Hi Shawn -- searches are on-going. We know exactly where the meteorites ended up, but it's a very difficult area to search. --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Shawn Alan via Meteorite-list Sent: Thursday,

Re: [meteorite-list] Ontario NJ NY NC PA WV VA DE OH Fireball Meteor 1823 EST 30JAN2016 w/ 5 Videos

2016-01-31 Thread Matson, Rob D. via Meteorite-list
Hi Dirk/All, I may have this one on multiple radars, centered about 8 km WNW of Chaneysville, PA, 14 km north of the MD/PA line. Heavily forested area, unfortunately, although the earliest return (23:19:12 UT) is over farmland along Bedford Valley Rd. (route 220). Sonic boom recorded by

[meteorite-list] 2nd recovered U.S. fall of 2016 - more details

2016-02-25 Thread Matson, Rob D. via Meteorite-list
Hi All, Some further information about the circumstances leading to the successful meteorite recovery east of Lubbock, TX. First off, Mike Hankey deserves special notice since often the first indication we have of a new potential fall is the AMS website that he maintains. Marc Fries was the first

[meteorite-list] Revisiting flightpath of Indian Butte (Stanfield/Casa Grande) bolide of 7 June 1998

2016-01-20 Thread Matson, Rob D. via Meteorite-list
Hi All, I've been revisiting the June 7th, 1998, fall over Stanfield, AZ (Indian Butte), attempting to better constrain the original bolide flight direction. I know David Kring at the time collected hundreds of reports from witnesses, trying to piece together the trajectory and a likely fall

[meteorite-list] Meteor over north central Missouri on 11 March 2016

2016-03-15 Thread Matson, Rob D. via Meteorite-list
Hi All, AMS event # 994-2016 did not have a large number of witnesses (no doubt due to it occurring at 2:15 am CST) but it appears to have been a potential meteorite dropper. Dan B. from Albany, MO, reported: "This was the second brightest meteor that my cameras have ever recorded. The other

[meteorite-list] Jupiter meteorite question

2016-03-19 Thread 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

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

2016-04-27 Thread 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-

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

2016-05-23 Thread 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,

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

2016-05-12 Thread 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

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

2016-04-14 Thread 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

Re: [meteorite-list] Oriented vs Orientated

2016-05-09 Thread 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] Earth time dilation: minimal latitude-dependence

2016-07-21 Thread 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

[meteorite-list] Dodging death in the Czech Republic

2016-08-01 Thread 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

[meteorite-list] More fun with GR

2016-07-21 Thread Matson, Rob D. via Meteorite-list
n "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: [meteor

Re: [meteorite-list] age of meteorites

2016-07-18 Thread 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

[meteorite-list] Meteorite temperature (again)

2016-06-28 Thread 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

Re: [meteorite-list] Request for assistance

2016-07-05 Thread 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

Re: [meteorite-list] More fun with GR

2016-07-21 Thread Matson, Rob D. via Meteorite-list
016 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 Meteori

[meteorite-list] More on meteorite temperature

2016-07-01 Thread 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

Re: [meteorite-list] More on meteorite temperature

2016-07-01 Thread 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.

[meteorite-list] Lake Michigan bolide

2017-02-06 Thread 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

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

2017-01-24 Thread 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! __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at

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

2017-01-26 Thread 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,

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

2017-01-30 Thread 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

[meteorite-list] South Carolina bolide on 25 January 2017

2017-01-26 Thread 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

Re: [meteorite-list] August eclipse in Wyoming

2017-02-28 Thread 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

Re: [meteorite-list] How Many Meteorites Are Hidden on Farmland?

2016-08-31 Thread 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

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

2016-09-12 Thread 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

[meteorite-list] Joel Schiff question

2016-11-24 Thread 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

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

2016-12-06 Thread 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

[meteorite-list] You know who

2017-01-14 Thread 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]

[meteorite-list] Dubai meteor = 2017-056B Progress Rocket Body

2017-10-16 Thread 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

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

2017-09-06 Thread 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:

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

2017-10-29 Thread 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,

[meteorite-list] Minor planet impactor witnessed over Botswana

2018-06-02 Thread 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

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

2018-07-02 Thread 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:

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

2018-07-02 Thread 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

[meteorite-list] Seismic signature for Michigan bolide last night

2018-01-17 Thread 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:

[meteorite-list] Michigan fall

2018-01-18 Thread 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

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

2018-01-17 Thread 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

[meteorite-list] Happy Anniversary

2018-01-24 Thread Matson, Rob D. via Meteorite-list
Happy 2-year anniversary for the Osceola, Florida fall! --Rob __ 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] Spurious extinction "periodicity"

2018-02-08 Thread 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

[meteorite-list] Chelyabinsk

2018-02-16 Thread Matson, Rob D. via Meteorite-list
Happy 5-year anniversary, Chelyabinsk! Time flies... --Rob __ 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

Re: [meteorite-list] Meteorites Recovered From Ocean Bottom

2018-07-06 Thread 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),

Re: [meteorite-list] Search is on for meteorite in metro Detroit

2018-01-18 Thread 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

[meteorite-list] Tiangong-1 decay predictions

2018-04-01 Thread 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

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

2018-04-01 Thread 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:

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

2018-04-01 Thread 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

Re: [meteorite-list] possible Alabama lunar meteorite fall

2018-11-18 Thread 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

[meteorite-list] Mars Insight landing

2018-11-26 Thread 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 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at

Re: [meteorite-list] possible Alabama lunar meteorite fall

2018-11-18 Thread Matson, Rob D. via Meteorite-list
..@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, >

[meteorite-list] Osceola

2019-01-24 Thread Matson, Rob D. via Meteorite-list
Happy 3-year anniversary, Osceola, Florida! __ 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

[meteorite-list] OT Sad news: Notre-Dame is gone

2019-04-15 Thread 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 __ Visit our Facebook

[meteorite-list] Happy Birthday Sutter's Mill

2019-04-22 Thread 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 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at

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

2020-02-02 Thread 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

Re: [meteorite-list] Galactic Analytics content?

2021-01-11 Thread 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:

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

2020-12-01 Thread 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”

Re: [meteorite-list] Vermont event

2021-03-10 Thread 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