Hey SPace Placers!
If you are interested, here is a link to a paper just published that provides a preliminary orbit for the asteroid that hit Russia on February 15 - http://urania.udea.edu.co/sitios/facom/research/chelyabinsk-meteoroid.php
Be sure to look at the attachments and You Tube videos. In one You Tube you can see snow coming off of a roof from the shock wave that hits. It is also fascinating to watch the orbit replay which goes back years and shows the impact point of Earth and the asteroid.
Sky Guy in VA
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