The 60 - 130 metre wide asteroid 2015 RL83 made a close pass (59.7 LD, 0.1535 AU) travelling at 8.38 km/second, to the Earth-Moon system on the 12th September 2015 @ 16:05 UT ±00:11.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).