The 56 - 130 metre wide asteroid 2000 UR16 will make a close pass (64.7 lunar distances, 0.1661 au), travelling at 19.33 km/second, to the Earth-Moon system on the 28th October, 2012 @ 04:27 UT ±04:31.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).