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Meteoroid in Russia

on 15 February 2013

On the morning of Friday, 15 February 2013, at approximately 09:30 local time, an explosion was heard in the Chelyabinsk region of Russia. The cause is currently suspected to be at least a meteoroid that burned when enetering the Earth's atmosphere. Shortly afterwards, the shock wave broke the windows of the buildings, injuring several people.

The event is not related to the 2012 DA14 asteroid, which this evening will be closest to Earth at a distance of 27,000 km. 

"To establish a link between the meteoroid and asteroid it would be necessary to calculate the meteoroid's trajectory. It have to be combined visual observations from the ground with the radar observations (if these observations are available). On first examination I think that the two events should be dissociated, because the trajectory of the meteoroid is more north-south, exactly opposite of the trajectory of the asteroid. 2012 DA14 is approaching the Earth and is visible first in the southern hemisphere, then in the northern hemisphere", said Mirel Bîrlan, Romanian researcher (established in France) from the Paris Observatory.
"The event which that took place over the Celiabinsk region of Russia was most likely caused by a meteoroid, a small asteroid that entered Earth's atmosphere and thus produced, by burning, an extremely bright fireball, causing a shock wave and most probably a explosion in the lower layers of the atmosphere. The shock wave is the one which generated damage at the ground and thus injuries to people. Although still undiscovered at this time, most likely exists at least one fragment that did not burn completely and fell on the ground, in which case, if it is found, we'll talk about a meteor. "- Valentin Grigore, President of the Romanian Astonomica Meteor Society.