* Astronomy

The 64 - 140 metre wide asteroid 2010 TD55 will make a close pass (31.8 lunar distances, 0.0817 AU), travelling at 13.95 km/second, to the Earth-Moon system on the 20th October, 2010 @ 23:51 UT.

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