http://www.newsweek.com/asteroid-2008-ag33-space-rock-close-approach-earth-nasa-1701685

An asteroid potentially 2,560 feet in diameter flew past Earth late on Wednesday night whilst travelling at more than 23,000 miles per hour, NASA data shows.

The space rock, called 418135 (2008 AG33) came closest to Earth at about 10:46 p.m. ET on Wednesday night (2:46 a.m. UTC on Thursday).