INCOMING!, Detection and observation of Earth-approaching asteroids. |
INCOMING!, Detection and observation of Earth-approaching asteroids. |
 Oct 6 2008, 07:53 PM
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 Senior Member  Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004  |
no sone seems to have noticed this yet
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Oct 10 2008, 07:13 AM
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#2
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
Some analyses of the Meteosat images http://www.eumetsat.int/Home/Main/Media/Features/707785?l=en
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Oct 10 2008, 07:35 AM
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#3
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 Senior Member Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
I haven't seen their ideas on whether the Meteosat images captured the streaking bolide or the fading fireball after disintegration. The fact IR and visible channel hotspot locations don't match, it's plausible the IR frame was captured a couple of seconds earlier with the "RGB" channels capturing the static fireball.
Thoughts? -------------------- |
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Oct 11 2008, 07:59 PM
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#4
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 Junior Member Group: Members Posts: 25 Joined: 14-March 08 Member No.: 4066 |
QUOTE (ugordan @ Oct 10 2008, 10:35 AM)  I haven't seen their ideas on whether the Meteosat images captured the streaking bolide or the fading fireball after disintegration. The fact IR and visible channel hotspot locations don't match, it's plausible the IR frame was captured a couple of seconds earlier with the "RGB" channels capturing the static fireball. Thoughts? Could it be possible that the explosion had a highspeed directional jet of hot gas and dust? The explosion would be visible in visible channels and the hot jet-burst in infrared. And as the burst is very high-speed maybe it explains the 23 km distance between the two hotspots. Last year Sandia Labs made new computer models and simulations regarding Tunguska explosion. Their simulations showed a higly directional high-speed jet of hot gas and dust emanating from an exploding asteroid when it explodes in the atmosphere. Here's a link to their news (with cool animations!): http://www.sandia.gov/news/resources/relea...7/asteroid.html QUOTE Simulations show that the material of an incoming asteroid is compressed by the increasing resistance of Earth’s atmosphere. As it penetrates deeper, the more and more resistant atmospheric wall causes it to explode as an airburst that precipitates the downward flow of heated gas. |
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Oct 11 2008, 08:02 PM
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#5
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Senior Member Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
QUOTE (Spin0 @ Oct 11 2008, 09:59 PM) Could it be possible that the explosion had a highspeed directional jet of hot gas and dust? The explosion would be visible in visible channels and the hot jet-burst in infrared. Why wouldn't the explosion be visible in the infrared as well? -------------------- |
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Paolo INCOMING! Oct 6 2008, 07:53 PM
climber Too much info kill the info! Where do we have ... Oct 6 2008, 07:57 PM ugordan Whoa! Any chance of organizing a crash observi... Oct 6 2008, 07:58 PM Holder of the Two Leashes An asteroid... well, really a meteor, is now predi... Oct 6 2008, 07:58 PM charborob Any idea how big is this rock? Oct 6 2008, 08:00 PM Juramike QUOTE The absolute magnitude indicates that the
ob... Oct 6 2008, 08:03 PM imipak Is this the first time a fireball's been predi... Oct 6 2008, 08:05 PM TheChemist Hey guys, don't just tear your swimming suits ... Oct 6 2008, 08:12 PM Holder of the Two Leashes There have been at least three revisions in the la... Oct 6 2008, 08:19 PM climber 30.4!!! Gona be visible over the horiz... Oct 6 2008, 08:45 PM Holder of the Two Leashes Space.com is now reporting the story, and says atm... Oct 6 2008, 08:46 PM
SFJCody I wonder if it can be imaged from orbit during ent... Oct 6 2008, 09:30 PM Shaka From TPS:
QUOTE The meteor is expected to be visi... Oct 6 2008, 09:31 PM SFJCody I guess once LSST and PanSTARRS come online we... Oct 6 2008, 09:44 PM ngunn It may be small and harmless, but for me knowing i... Oct 6 2008, 09:44 PM Holder of the Two Leashes Man, I've never seen anything quite like this.... Oct 6 2008, 10:39 PM Shaka LINKS, man! Give us links, HTL! Oct 6 2008, 10:53 PM Holder of the Two Leashes Link
Anything with 2008 TC3. Most recent on top.... Oct 6 2008, 10:59 PM Juramike I guess they won't be seeing it from here (bad... Oct 6 2008, 11:31 PM dmuller If this thing is coming in shallow from NE to SW t... Oct 6 2008, 11:38 PM volcanopele hmm, I think my Celestia copy needs fixing. Using... Oct 6 2008, 11:46 PM Fran Ontanaya The NEO Program lists it as a close approach at 0.... Oct 6 2008, 11:55 PM Holder of the Two Leashes Used a reliable horizon calculator to come up with... Oct 6 2008, 11:59 PM dmuller Emily pointed to a beautiful simulation of the eve... Oct 7 2008, 12:47 AM elakdawalla By the way, discussion on Minor Planets Mailing Li... Oct 7 2008, 12:56 AM volcanopele I agree, that's the direction I got from my si... Oct 7 2008, 01:00 AM Holder of the Two Leashes QUOTE (Shaka @ Oct 6 2008, 06:48 PM) Er..... Oct 7 2008, 01:00 AM nprev "Major Bolide Forecast Tonight; No Damage Exp... Oct 7 2008, 01:19 AM Hungry4info If I did the math right, just a few more minutes u... Oct 7 2008, 01:39 AM claurel Here's a Celestia simulation of 2008 TC3's... Oct 7 2008, 01:44 AM dmuller QUOTE (claurel @ Oct 7 2008, 11:44 AM) He... Oct 7 2008, 01:58 AM Hungry4info Going to? Has it already? Or did I again get my ma... Oct 7 2008, 02:00 AM tedstryk QUOTE (Hungry4info @ Oct 7 2008, 03:00 AM... Oct 7 2008, 02:23 AM claurel Here's a Celestia simulation of 2008 TC3's... Oct 7 2008, 02:31 AM Holder of the Two Leashes I will take the liberty of posting this quote from... Oct 7 2008, 02:32 AM volcanopele As 2008 TC3 passes over Niger, let's us have a... Oct 7 2008, 02:40 AM jumpjack QUOTE (volcanopele @ Oct 7 2008, 04:40 AM... Oct 7 2008, 07:49 AM ugordan SpaceWeather.com has news about a possibly positiv... Oct 7 2008, 08:33 AM stevesliva And the earth emits a contented belch. Oct 7 2008, 02:50 AM deglr6328 Well that was that....it would seem. Looks like we... Oct 7 2008, 02:50 AM volcanopele At last check, Earth still here.
2008 TC3...not s... Oct 7 2008, 02:51 AM deglr6328 my mistake, nearly 5am local time rather than 3 UT... Oct 7 2008, 02:53 AM dmuller I can confirm that Australia is still here as well... Oct 7 2008, 02:57 AM Bobby Any Videos or Photos of the event yet??? Oct 7 2008, 03:48 AM deglr6328 here you go!
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... Oct 7 2008, 03:57 AM deglr6328 Well we can at least say that it wasn't CATAST... Oct 7 2008, 08:48 AM volcanopele Surprised I haven't seen any word of this from... Oct 7 2008, 09:20 AM Fran Ontanaya A small piece of info about spectra: http://tech.g... Oct 7 2008, 09:49 AM djellison That series of 10s exposures showing the thing ... Oct 7 2008, 09:57 AM Tman Maybe an indirect sighting of a webcam at El Groun... Oct 7 2008, 10:27 AM PhilCo126 Based on 26 optical observations, the probability ... Oct 7 2008, 05:06 PM centsworth_II QUOTE (PhilCo126 @ Oct 7 2008, 01:06 PM) ... Oct 7 2008, 05:25 PM PhilCo126 O.K. impact with Earth's atmosphere was for su... Oct 7 2008, 05:31 PM tedstryk QUOTE (PhilCo126 @ Oct 7 2008, 06:31 PM) ... Oct 7 2008, 06:29 PM ElkGroveDan QUOTE (tedstryk @ Oct 7 2008, 11:29 AM) W... Oct 7 2008, 08:20 PM ngunn Spaceweather.com now has an update on an infrasoun... Oct 7 2008, 09:45 PM dmuller well it did get some coverage in Australia: headli... Oct 8 2008, 02:36 AM jumpjack No images/video after more than 24 hours. I guess ... Oct 8 2008, 06:38 AM PhilCo126 Other than the webcam images in the German forum a... Oct 8 2008, 10:36 AM jumpjack I found some guys who actually have SEEN the objec... Oct 8 2008, 02:09 PM jumpjack Standalone Windows .fit viewer:
http://www.nrao.ed... Oct 8 2008, 02:43 PM Fran Ontanaya Meteosat 8 catched it! (see SpaceWeather.com) Oct 8 2008, 06:26 PM ugordan Nice! I was hoping some satellite would catch ... Oct 8 2008, 06:33 PM Tman Another processed image of Meteosat http://www.eum... Oct 9 2008, 10:37 AM jumpjack Another incoming?!?
http://remanzacco.blogspot... Oct 9 2008, 01:04 PM djellison QUOTE (jumpjack @ Oct 9 2008, 02:04 PM) A... Oct 9 2008, 01:06 PM jumpjack Full inline quote removed - Admin
according to an... Oct 9 2008, 01:21 PM jumpjack 2008 TC3 just 1 hour before reentry, while enterin... Oct 9 2008, 01:06 PM PhilCo126 True video of 2008 TC3 ??? ??? ???
http://www.... Oct 9 2008, 06:09 PM ugordan QUOTE (PhilCo126 @ Oct 9 2008, 08:09 PM) ... Oct 9 2008, 06:12 PM djellison Nor do I - that's just your average meteor str... Oct 9 2008, 06:14 PM deglr6328 on the NIGHT OF entry I was looking at random yout... Oct 9 2008, 07:53 PM Spin0 QUOTE (ugordan @ Oct 11 2008, 11:02 PM) W... Oct 12 2008, 11:24 AM ugordan Great analysis, Spin0. I think you've nailed t... Oct 12 2008, 11:38 AM dilo Excellent work, Spin! I think too that halved ... Oct 12 2008, 05:36 PM PhilCo126 Looks like our doubts on the 2008 TC3 video were c... Oct 10 2008, 06:56 PM jumpjack QUOTE (PhilCo126 @ Oct 10 2008, 08:56 PM)... Oct 11 2008, 08:49 AM Tman Nice GIF of the fast gyrating http://www.skyandtel... Oct 11 2008, 09:15 AM Tman That's by far a better one to trick with it - ... Oct 11 2008, 04:11 PM dilo Really impressive and beatiful lucky picture! Oct 11 2008, 05:49 PM jumpjack QUOTE (Tman @ Oct 11 2008, 06:11 PM) That... Oct 11 2008, 06:02 PM claurel While hoping and waiting for some images of the bo... Oct 11 2008, 06:46 PM DDAVIS I created another visualization of the trajectory ... Oct 11 2008, 09:58 PM claurel QUOTE (DDAVIS @ Oct 11 2008, 02:58 PM) Wh... Oct 12 2008, 04:51 AM Spin0 US Gov fireball data release regarding 2008 TC3:
... Oct 16 2008, 02:34 PM ugordan QUOTE (Spin0 @ Oct 16 2008, 04:34 PM) US ... Oct 16 2008, 02:56 PM Mongo I guess that this shows that we still have a lot t... Oct 16 2008, 05:14 PM ugordan QUOTE (Mongo @ Oct 16 2008, 07:14 PM) I w... Oct 16 2008, 05:22 PM jumpjack QUOTE (ugordan @ Oct 16 2008, 07:22 PM) h... Oct 17 2008, 07:25 AM djellison QUOTE (jumpjack @ Oct 17 2008, 08:25 AM) ... Oct 17 2008, 07:37 AM jumpjack full inline quote removed. Admins are VERY scary.... Oct 17 2008, 09:16 AM ugordan QUOTE (jumpjack @ Oct 17 2008, 11:16 AM) ... Oct 17 2008, 09:18 AM nprev Neat link, Gordan; thanks!
Re the detonation ... Oct 16 2008, 09:58 PM volcanopele Spying for Major League Baseball? (sorry, old Simp... Oct 17 2008, 08:59 AM ugordan QUOTE (volcanopele @ Oct 17 2008, 10:59 A... Oct 17 2008, 09:16 AM stevesliva QUOTE (volcanopele @ Oct 17 2008, 04:59 A... Oct 18 2008, 01:04 PM |
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