The 62 - 140 metre wide asteroid 2015 MP66 will make a close pass (60.6 LD, 0.1556 AU) travelling at 7.51 km/second, to the Earth-Moon system on the 13th July 2015 @ 11:52 UT ±00:03.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).