* Astronomy

The 630 - 1400 metre wide asteroid 2007 RU17 will make a close pass (40.6 lunar distances, 0.1044 AU), travelling at 25.42 km/second, to the Earth-Moon system on the 29th October, 2010 @ 16:09 UT.

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