Slooh members watched live last night as we trained our telescopes on a fast moving asteroid as it prepared to make its close approach to Earth. The time-lapse above shows the asteroid with an estimated size of between 174 - 394ft at a distance of 644,184 miles. Asteroid 2010 WC9 will make its closest approach to Earth tonight at 6:05 EDT (22:05UTC) traveling just 126,098 miles away, at a speed of 28,655mph. For comparison, the distance from the Earth to the Moon is 238,900 miles, or roughly halfway between.
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