Joe Kelley
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http://www.universetoday.com/2009/11/09/surprise-unknown-asteroid-buzzed-earth/

A previously undiscovered asteroid came within 14,000 km of Earth last week, and astronomers noticed it only 15 hours before closest approach. On Nov. 6 at around 16:30 EST a 7 meter asteroid, now called 2009 VA, came only about 2 Earth radii from impacting our home planet . This is the third-closest known non-impacting Earth approach on record for a cataloged asteroid.
Only thirteen months ago, another asteroid, 2008 TC3 was discovered under similar circumstances, but that one was found to be on a trajectory headed for the Earth, with impact only about 11 hours away. It impacted in a remote area of Africa; no one was injured and fragments have since been recovered for study.
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