A Close Encounter

Asteroid 2012 TC4 flew by the Earth during the night of 11/12 October, 2017. This video was recorded at 20:54 UTC on the 11th by astronomers Peter Schlatter and Dominik Bodenmann working at the ZIMLAT telescope at the Swiss Optical Ground Station and Geodynamics Observatory operated by the Astronomical Institute of the University of Bern (AIUB) while the 10 to 20 m diameter asteroid was approaching the Earth. It made its closest approach at 05:41 UTC on the 12th, less than 44,000 km away—much closer than the Moon. Watch the asteroid move from left to right across the upper half of the reverse video image.

Video Credit: AIUB

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