The 13 - 30 metre wide asteroid 2014 JS25 made a close pass (10.5 lunar distances, 0.0271 AU), travelling at 7.95 km/second, to the Earth-Moon system on the 9th May 2014 @ 10:16 UT ±00:03.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).