Chelyabinsk impact melt breccia meteorite-
Chelyabinsk region, Southern Urals, Russia.
Fell February 15th , 2013, 9:20 am local time.
LL5 Chondrite.
126.9 grams.…
With an estimated initial mass of about 12,000–13,000 metric tonnes (13,000–14,000 short tons, heavier than the Eiffel Tower), and measuring about 20 meters in diameter, it is the largest known natural object to have entered Earth’s atmosphere since the 1908 Tunguska event that destroyed a wide, remote, forested area of Siberia. The Chelyabinsk meteor is also the only meteor confirmed to have resulted in a large number of injuries. The atmosphere absorbed most of the object’s energy, with a total kinetic energy before atmospheric impact equivalent to approximately 500 kilotons of TNT (about 1.8 PJ), 20–30 times more energy than was released from the atomic bomb detonated at Hiroshima.
Some 7,200 buildings in six cities across the region were damaged by the explosion’s shock wave, and nearly 1,500 people were injured as a result of broken glass from the multiple sonic boom explosions.
