Asteroid 2205 YU55 a 400 meter asteroid hurtles past earth just after its closest approach on Nov 8 2011 at 02:55 UTC. Its closest approach of 0.8 Lunar distance is the closest approach by an object of this size for the next 17 years when 2001 WN5 a 1 klm big boy comes through in June 2028, followed by Apophis on April 13 2029.
Very cool.
RMR667 3 months ago