The Asteroid That Buzzed By Earth Monday Has Its Own Moon

January 27, 2015 1:37 PM

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Space fans were thrilled to learn that Asteroid 2004 BL 86, a mountain-sized space rock that has zoomed past Earth Monday, has brought along a tiny moon. Yesterday, NASA’s Deep Space Network antenna at Goldstone, California, has released the first radar images of the two objects.

The asteroid is 1,100 feet wide, while its companion moon is about 230 feet wide. The closest flyby of 2004 BL86 was on Monday (January 26, 2015) at a safe distance of 750,000 miles from Earth, reaching a +9.0 magnitude. The asteroid was visible from 6:00 p.m. (CST) through early morning.

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