* Astronomy

The 320 - 710 metre wide asteroid 2000 CH59 will make a close pass (45.1 lunar distances, 0.1158 AU), travelling at 9.59 km/second, to the Earth-Moon system on the 29th December, 2011 @ 21:04 UT ±00:01.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).