* Astronomy

The 200 - 450 metre wide asteroid 2008 SO will make a close pass (61.9 lunar distances, 0.1590 AU), travelling at 7.16 km/second, to the Earth-Moon system on the 30th July, 2011 @ 08:12 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).