* Astronomy

The 28 - 63 metre wide asteroid WV45 will make a close pass (23.8 lunar distances, 0.0611 AU), travelling at 5.93 km/second, to the Earth-Moon system on the 27th December 2013 @ 14:22 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).