The 32 - 73 metre wide asteroid 2015 KH will make a close pass (14.3 LD, 0.0369 AU) travelling at 9.80 km/second, to the Earth-Moon system on the 29th May 2015 @ 13:18 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).