The 62 - 140 metre wide asteroid 2014 QK365 made a close pass (57.1 lunar distances, 0.1466 AU), travelling at 13.25 km/second, to the Earth-Moon system on the 1st September 2014 @ 03:24 UT ±00:20.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).