This radar image of asteroid 2005 YU55 was obtained NASA Deep Space Network antenna in Goldstone, Calif. on Nov. 7, 2011, when the space rock was at 3.6 lunar distances, which is about 860,000 miles, or 1.38 million kilometers, from Earth.

Asteroid 2005 YU55 Approaches Close Earth Flyby

This radar image of asteroid 2005 YU55 was obtained NASA Deep Space Network antenna in Goldstone, Calif. on Nov. 7, 2011, when the space rock was at 3.6 lunar distances, which is about 860,000 miles, or 1.38 million kilometers, from Earth.