The 31 - 68 metre wide asteroid 2010 XW58 will make a close pass (58.3 lunar distances, 0.1498 AU), travelling at 11.20 km/second, to the Earth-Moon system on the 2nd January, 2013 @ 18:51 UT ±05:20.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).