The 49 - 110 metre wide asteroid 2015 FA117 made a close pass (56.5 LD, 0.1452 AU) travelling at 15.98 km/second, to the Earth-Moon system on the 25th March 2015 @ 18:32 UT ±00:29.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).