Meteorite fall in Chelyabinsk!

Discussion in 'Astronomy, Exobiology, & Cosmology' started by muncha, Feb 15, 2013.

  1. Rhaedas Valued Senior Member

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    Wouldn't the main shock wave be from its disintegration?
     
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  3. Rhaedas Valued Senior Member

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    It had a totally different direction of travel, and the time distance between the two encounters is a large one.

    I've seen comments here and there complaining that NASA and the like didn't warn anyone. It's difficult for us to find asteroids 10 times larger than this one probably was, so we don't even try to find these small ones. And yes, this was a small one, not even a city killer. It wouldn't have even made the news had it not impacted a populated area.
     
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  5. rodereve Registered Member

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    I wonder how many meteorites go unnoticed that crash in undeveloped areas or over the oceans. This is how most sci-fi alien movies start lol
     
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  7. Rhaedas Valued Senior Member

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    A lot, but the bigger ones don't really go unnoticed anymore. They can set off a false positive for monitoring of nuclear blasts. Well, not really a positive, as an actual nuclear detonation has a distinct signature.
     
  8. ElectricFetus Sanity going, going, gone Valued Senior Member

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    Strange there all sorts of crazy estimates on its yield now, I would think the numbers would get more refined over time not less.
     
  9. youreyes amorphous ocean Valued Senior Member

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    The loss in estimates from a meteorite attack over Chelyabinsk is in billion of rubles, 16 affected social structures and 900 injured people and climbing...mostly from sideeffect of shockwaves of the initial explosion.
     
  10. ElectricFetus Sanity going, going, gone Valued Senior Member

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    yeah that does not really explain why its yield is ranging from .1-500 kilotons :/
     
  11. youreyes amorphous ocean Valued Senior Member

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    well depends on the altitude of its trajectory. It is quite obvious that the shockwave traveled for very long time before it reached the ground objects. I recall hearing a testimony of the people there that it was 2 minutes until they heard the shockwave...that is indeed quite far away. at c(sound) = 340 m/s and t = 120 s...that is a distance of 40km where the blast occured.

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    , Blast wave equation requires some inputs besides time...
     
    Last edited: Feb 16, 2013
  12. ElectricFetus Sanity going, going, gone Valued Senior Member

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    That does not change how much energy was release by this impact.
     
  13. LaurieAG Registered Senior Member

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    Wierd stuff, the Russian meteorite was said to be almost opposite trajectory to 2012 DA14 but I'm not sure.

    http://www.today.it/mondo/cuba-meteorite.html
    http://thewatchers.adorraeli.com/20...e-world-sweden-netherlands-russia-japan-cuba/
    http://thelatestworldwidemeteorreports.blogspot.com.au/

    http://bits.blogs.nytimes.com/2013/02/15/facebook-admits-it-was-hacked/?hp

     
    Last edited: Feb 16, 2013
  14. spidergoat pubic diorama Valued Senior Member

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    So how does a meteor attains such speeds? (33,000mph)?
     
  15. youreyes amorphous ocean Valued Senior Member

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    my assumption is that the meteorite was at its perigee helicocentric orbit where it is the fastest.
     
  16. joepistole Deacon Blues Valued Senior Member

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  17. spidergoat pubic diorama Valued Senior Member

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    Good, that's also where I'm at my fastest.
     
  18. Bowser Namaste Valued Senior Member

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    Exciting, it was. I wish I could have seen it myself.
     
  19. youreyes amorphous ocean Valued Senior Member

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    Honestly with your mass and water content you would have long have disintegrated within your trajectory around the sun, if your carcass somehow survived the boiling water in your body and proton bombardment...well than you would have burned up at the Karman line of Earth, with Infrasound station of CTBT not registering your presence whatsoever)
     
  20. youreyes amorphous ocean Valued Senior Member

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    seen it from the roof of copper factory in Chelyabinsk? best view of it there, direct impact)
     
  21. Bowser Namaste Valued Senior Member

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    The videos are impressive but not the same as living the experience.
     
  22. youreyes amorphous ocean Valued Senior Member

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    It wouldn't be much of a living experience if you stood on the roof of the copper factory of Chelyabinsk, the ground zero of the impact of the meteorite.

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  23. Bowser Namaste Valued Senior Member

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    I'm hearing that it had the explosive force of 1 MT. Is that correct.
     

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