The 7 - 16 metre wide asteroid 2014 OX3 made a close pass (2.2 lunar distances, 0.0058 AU), travelling at 12.65 km/second, to the Earth-Moon system on the 21st July 2014 @ 19:40 UT ±00:02.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
