* Astronomy

The 960 - 2100 metre wide asteroid 2003 WM7 will make a close pass (47.6 lunar distances, 0.1224 AU), travelling at 28.54 km/second, to the Earth-Moon system on the 9th December, 2011 @ 07:52 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).