In case you’re wondering this is the asteroid that had a close encounter with the Earth yesterday; coming nearer than the Moon does.

There was no danger of contact but apparently if it had struck the Earth it would have had the effect of a magnitude seven earthquake – severe enough but imagine if it hit a city. (Worse damage would have been caused if it had fallen in the ocean and triggered a tsunami.)

(Via Astronomy Picture of the Day and NASA.)

The video is of radar images, comprises six stills and is looped five times. At the time it was about 800,000,000 miles away: 3-4 times the Moon-Earth distance.