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General Astronomy >> General Observing and Astronomy

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Littlegreenman
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Meteorite hits Russia, people injured
      #5680591 - 02/15/13 02:32 AM

This just in on the 11 PM Pacific Time news: A meteorite appears to break up at 30,000 feet over Russia, about 1,000 miles east of Moscow. At least 100 injuries reported mostly due to broken glass from shock waves? Sonic booms? Video showing from several angles is showing up. Some objects appear to have hit ground. News outlets don't know the difference between a meteor, meteorite, and a meteor shower, but we knew that.

As more facts come in some of the above may be corrected.
LGM


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core
Pooh-Bah
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Reged: 02/23/08

Loc: Mostly in Norman, OK
Re: Meteorite hits Russia, people injured new [Re: Littlegreenman]
      #5680601 - 02/15/13 02:38 AM

fwiw NEO and Space Rocks sub forums have youtube links to various footage ...

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Gus1974
newbie


Reged: 12/22/12

Re: Meteorite hits Russia, people injured new [Re: core]
      #5680636 - 02/15/13 03:23 AM

Scary stuff.

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Astrojensen
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Re: Meteorite hits Russia, people injured new [Re: Gus1974]
      #5680657 - 02/15/13 03:51 AM

http://rt.com/news/meteorite-crash-urals-chelyabinsk-283/

Some reports indicate that the incoming meteorite was intercepted by a quick-response (automatic?) surface to air missile. This needs verification.

In any way: It has happened. A meteorite airburst has hit a populated area. This will hopefully wake some people up. It seems it was extremely close to a regional disaster. If it had happened over Moscow, then imagine the chaos...


Clear skies!
Thomas, Denmark


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Dave Mitsky
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Re: Meteorite hits Russia, people injured new [Re: Astrojensen]
      #5680678 - 02/15/13 04:44 AM

Here are links to two more articles on the event:

http://www.space.com/19801-possible-meteor-blast-russia.html

http://news.discovery.com/space/asteroids-meteors-meteorites/huge-fireball-ex...

Dave Mitsky


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Dave Mitsky
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Re: Meteorite hits Russia, people injured new [Re: Dave Mitsky]
      #5680690 - 02/15/13 05:25 AM

Phil Plait's article can be seen at http://www.slate.com/blogs/bad_astronomy/2013/02/15/breaking_huge_meteor_expl...

Dave Mitsky


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Astrojensen
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Re: Meteorite hits Russia, people injured new [Re: Dave Mitsky]
      #5680699 - 02/15/13 05:42 AM

In this video:

http://www.youtube.com/watch?v=4ZxXYscmgRg

It seems like the meteor actually just bounces off the atmosphere and zips out in space again (you can see it briefly at the end of the trail as a white spot that moves away from the trail rapidly and disappears).

If so, then it wasn't an airburst explosion, but just a sonic boom and a drizzle of small fragments from a MUCH larger body. Seems that a lot of people just had a very, very lucky day. And I'm not talking about getting a famous video on YouTube, but to be alive at all...

Ouch. Seems this one was a little too close for comfort.


Clear skies!
Thomas, Denmark


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demiles
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Re: Meteorite hits Russia, people injured new [Re: Astrojensen]
      #5680701 - 02/15/13 05:45 AM

Just watched some of the video, amazing!

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Andy Howie
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Re: Meteorite hits Russia, people injured new [Re: demiles]
      #5680709 - 02/15/13 05:57 AM

20ft crater found.

84 children injured. 112 people hospitalised. Injury count at 550.

Sonic boom captured on vid.........

http://www.liveleak.com/view?i=b70_1360910617

-14C and no windows is a bad combination

Best wishes to those folk out there.


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Astrojensen
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Re: Meteorite hits Russia, people injured new [Re: Andy Howie]
      #5680716 - 02/15/13 06:12 AM

Another video which seems to support that the meteor just grazed the atmosphere and went out back in space again: (around 0:52, lefthand screen)

http://www.youtube.com/watch?v=f525TmMSBs0


Clear skies!
Thomas, Denmark


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Qwickdraw
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Re: Meteorite hits Russia, people injured new [Re: Astrojensen]
      #5680737 - 02/15/13 06:37 AM

Quote:

InIt seems like the meteor actually just bounces off the atmosphere and zips out in space again (you can see it briefly at the end of the trail as a white spot that moves away from the trail rapidly and disappears).

Clear skies!
Thomas, Denmark




I am going to guess that what remained did not "zip" back into space but landed dozens of miles away. I believe its velocity was severely lowered during the burst and its altitude was then too low to escape Earth's gravity at that point.


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leviathan
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Reged: 11/29/11

Loc: Azerbaijan
Re: Meteorite hits Russia, people injured new [Re: Qwickdraw]
      #5680752 - 02/15/13 07:04 AM

The most up-to-date videos and photos are on this topic:

http://www.astronomy.ru/forum/index.php/topic,104303.0.html

Thomas, idea of bouncing the atmosphere was also discussed there. But now they say that they've found 6m hole on frozen surface of lake near the city.


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leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Meteorite hits Russia, people injured new [Re: leviathan]
      #5680758 - 02/15/13 07:09 AM

On these videos you can watch the effect of shock wave:

http://www.youtube.com/watch?feature=player_embedded&v=_nOaRpF0DJk

http://www.youtube.com/watch?feature=player_embedded&v=efvP-RRuJuA

http://www.youtube.com/watch?feature=player_embedded&v=qch-pIEgf44#at=10


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swalker
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Loc: 42.9225°N, 71.2242°W
Re: Meteorite hits Russia, people injured new [Re: leviathan]
      #5680783 - 02/15/13 07:37 AM

That's not a meteor crater, that's a burning sinkhole leaking natural gas or methane. A meteor isn't going to leave a burning hole.
Highly doubtful this rock bounced back into space. Intriguing!


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BrooksObs
professor emeritus


Reged: 12/08/12

Re: Meteorite hits Russia, people injured new [Re: swalker]
      #5680887 - 02/15/13 08:57 AM

There is nothing in the images posted so far on the Internet to suggest that the reported damage is from an "airburst" event. Actual structural damage, except to one zinc factory is not evident beyond broken windows. Rather, it looks like the damage was generated by a relatively low altitude, very strong, sonic boom. Likewise, the meteor does not terminate in a sudden flash but rather continues onward after a sharp peak in brightness (a point at which the double smoke trail suggests it broke into two major fagments?) for some distance before slowly fading out. Nor is there anything to imply the strike was a grazing event, since all the video so far shows an angle of descent in the track, not near earth paralleling flight.

BrooksObs

Edited by BrooksObs (02/15/13 08:59 AM)


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Achernar
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Re: Meteorite hits Russia, people injured new [Re: Astrojensen]
      #5680946 - 02/15/13 09:21 AM

Very unlikely, not with the kind of velocity it came in with. Nuclear missiles don't fly anywhere near that fast, let alone surface to air missiles. Even if one did take off because someone thought a nuclear attack was in progress, it couldn't have intercepted it. Moreover, knowing how many asteroids are loose piles of boulders, gravel and dust, I wouldn't be quick to dismiss any possibility that this event was related to the asteroid flyby. As we have seen back in 1994, a planet can pull a loosely held together object apart, turning it into a shotgun blast of impactors. There is no reason to dismiss out of hand that a similar occurance here on Earth can take place. This was a very close call, this object or objecs nearly took out a city. That can spell really big trouble, if it was mistaken for a nuclear attack.

Taras


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Ravenous
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Reged: 11/14/09

Loc: UK
Re: Meteorite hits Russia, people injured new [Re: Achernar]
      #5680960 - 02/15/13 09:27 AM

Quote:

I wouldn't be quick to dismiss any possibility that this event was related to the asteroid flyby.



This is a great idea, but sadly I think not likely - DA14 is approaching from the southern hemisphere and this struck fairly high in the North.

However it's an amazing coincidence, two in a day from completely dfferent directions. Prepare for a lot of uninformed media chatter about cosmic conspiracies against us...


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Tom Polakis
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Re: Meteorite hits Russia, people injured new [Re: Littlegreenman]
      #5680966 - 02/15/13 09:28 AM

What strikes me from the video from the moving car is that it takes 10 seconds from the time it becomes visible until impact. The longest duration of a meteor (not space junk) that I have ever seen has been several seconds. Is the meteoroid decelerated that much by the earth's atmosphere, or was this one on a trajectory that nearly matched the earth's orbital velocity?

Tom


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bunyon
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Re: Meteorite hits Russia, people injured new [Re: Tom Polakis]
      #5680979 - 02/15/13 09:33 AM

Tom, another explanation is that it got much lower (closer to observer) than most. Most meteors stay very high and, therefore, go through less atmosphere and are visible for shorter lengths of time.

At least, that is one non-experts interpretation, because I had the same thought you did.


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CharlesW
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Re: Meteorite hits Russia, people injured new [Re: bunyon]
      #5681022 - 02/15/13 09:54 AM

USA Today's video. http://usat.ly/14WfaIa

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