The 87 - 200 metre wide asteroid 2015 OM21 made a close pass (35.5 LD, 0.0912 AU) travelling at 7.20 km/second, to the Earth-Moon system on the 15th July 2015 @ 06:01 UT ±00:12.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
