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Tuesday, October 17, 2017

Scientists have named the exact time of a dangerous convergence of the asteroid with the Earth


An asteroid the size of a 10-storey building will fly over the Earth on October 12. The distance from it to the surface of our planet will be at only 44000 km, that is, one-eighth of the distance to the moon. Astronomers at the European space Agency, which usually does not tend to dramatize visits asteroid, estimated the distance as “very close.” If the trajectory of 2012 TC4 (the so-called cosmic body) passed through the earth’s atmosphere, it would cause the same effect as fallen in the February 2013 Chelyabinsk meteorite.


photo: pixabay.com

As reported by “MK” in the Institute of astronomy, asteroid 2012 TC4 was opened October 4, 2012, when closer to Earth at a distance of 100 thousand kilometers. five years Later, he returns and the trajectory of his passes in the two times closer to our planet, only some 7 thousand km above the geostationary satellites, which fly at altitudes up to 37000 km, just recently it way explained experts from the European southern Observatory, working on “Very large telescope” (Very Large Telescope), in Chile. Currently celestial wanderer is from us at a distance of about 56 million kilometers.

During its first flight in 2012, astronomers were able to establish that the TC4 is a “pebble” size from 15 to 30 m in the longest part of it, moving at a speed of 7.6 km per second and makes a revolution around its axis over 12 earth minutes. Under the new rendezvous scientists need to determine the physico-chemical properties of celestial bodies, in particular, the type of regolith — surface substances.

The maximum convergence of the astroid (up to 14 stellar magnitude) will be held on October 12 at 8: 40 Moscow time. Wishing to observe the “stranger” needs to start doing it early, not yet dawn. It will be visible in a telescope with a diameter of 15 cm.

Help “MK”. 17-meter Chelyabinsk meteor, with which to compare the expected celestial body that exploded in the atmosphere over the city of Chelyabinsk with a kinetic energy of 100-500 kilotons of TNT (for comparison, the energy of a nuclear bomb detonated over Hiroshima was 20 kilotons). As a result of shock waves from the Chelyabinsk meteorite were damaged Windows of buildings and 5000 wounded (many broken Windows) 1613. Of those hospitalized were up to 112 people, two victims were in intensive care units.

source

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