* Astronomy

The 220 - 500 metre wide asteroid 1998 UP1 will make a close pass (77.7 lunar distances, 0.1997 AU), travelling at 16.98 km/second, to the Earth-Moon system on the 7th October, 2011 @ 18:39 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).