From BBC News at 15:07 GMT on Tuesday, March 3rd, Space rock makes close approach:
The object, known as 2009 DD45, thought to be 21-47m (68-152ft) across, raced by our planet at 13:44 GMT on Monday.
From Low Flying Rocks on Twitter at 13:45 GMT on Monday, March 2nd:
2009 DD45 just passed the Earth at 9km/s, approximately seventy-four thousand, eight hundred km away.