* Astronomy

The 260 - 580 metre wide asteroid 2010 RN80 will make a close pass (43.4 lunar distances, 0.1114 AU), travelling at 7.41 km/second, to the Earth-Moon system on the 18th October, 2010 @ 08:34 UT.

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