Asteroid passes past earth tonight Dec 10,2012

A small asteroid – discovered only yesterday – will sweep closely past Earth tonight and possibly undergo an eclipse by Earth’s shadow. If so, that would be a rare event, and something many amateur astronomers will want to see. The asteroid, and the eclipse, will not be visible to the eye. The asteroid has been designated 2012 XE54. Pasquale Tricarico of the Institute of Planetology is saying the asteroid will pass through the Earth’s shadow, creating an asteroid eclipse, an event whose mechanics are much like an eclipse of the full moon by Earth’s shadow.

 http://earthsky.org/space/close-pass-and-possible-asteroid-eclipse-tonight-of-2012-xe54