The 52 - 120 metre wide asteroid 2015 RH36 made a close pass (42.6 LD, 0.1095 AU) travelling at 7.28 km/second, to the Earth-Moon system on the 7th September 2015 @ 12:07 UT ±00:33.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).