* Astronomy

The 9 - 21 metre wide asteroid 2007 WC5 will make a close pass (34.8 lunar distances, 0.0893 AU), travelling at 8.07 km/second, to the Earth-Moon system on the 15th April, 2011 @ 00:40 UT ±3 days 04:43.

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