The 1000 - 2300 metre wide asteroid (348400) 2005 JF21 will make a close pass (20.1 LD, 0.0517 AU) travelling at 9.20 km/second, to the Earth-Moon system on the 16th August 2015 @ 14:01 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
