The 80 - 180 metre wide asteroid 2015 KK122 will make a close pass (64.6 LD, 0.1660 AU) travelling at 5.43 km/second, to the Earth-Moon system on the 2nd August 2015 @ 22:01 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).