This recent one, called the Asteroid 2004 BL86 that flew by Earth yesterday, is approximately 1,100 feet (325 meters) across and has a small moon approximately 230 feet (70 meters) across with it. The radar images of the asteroid were taken at its closest distance to Earth - about 800,000 miles (1.3 million kilometers, or 3.1 times the distance from Earth to the moon).
The asteroid fly-by vid below is a compilation from 20 images taken Monday by NASA's Deep Space Network antenna in Goldstone, California...
Info source: jpl.nasa
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