* Astronomy

The 76 - 170 metre wide asteroid 2010 SC17 will make a close pass (49.1 lunar distances, 0.1262 AU), travelling at 13.25 km/second, to the Earth-Moon system on the 31st October, 2010 @ 21:30 UT.

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