Small Asteroid to Fly Between Earth and Moon Today

Asteroid 2010 WC9 will make a close approach to Earth today (5/15/18) at 3:04 p.m. PDT (6:04 p.m. EDT, 22:04 UTC). At the time of closest approach, the asteroid will be no closer to Earth’s surface than about 120,000 miles (200,000 kilometers), which is about half the distance between Earth and the Moon. 2010 WC9 is about 200 to 400 feet (50 to 120 meters) across. The asteroid’s velocity at the time of closest approach will be about 29,000 mph (8 miles per second, 12.8 kilometers per second). This flyby is the closest approach 2010 WC9 will make to Earth for at least two centuries.

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