It was the third-closest known (non-impacting) Earth approach on record for a cataloged asteroid.

But before you turn to another Clipmark note: THIS WAS THE SECOND ONE THIS YEAR.

The one in March 2009 was close too. Look at the stats on that one 8 months ago:

Asteroid's Near Miss A Cosmic Close Call
Heavenly Body Buzzes Earth; Comes Within 48,800 Miles

The asteroid named 2009 DD45 was about 48,800 miles from Earth. That is just twice the height of some telecommunications satellites and about a fifth of the distance to the Moon.

CNN video report on that one here.

Real footage Video of 1972 asteroid in Canada here--which actually is seen trailing then "bouncing" off earth's atmosphere.