The 70 - 160 metre wide asteroid 2001 OV13 will make a close pass (42.5 LD, 0.1092 AU) travelling at 6.43 km/second, to the Earth-Moon system on the 29th July 2015 @ 19:49 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).