* Astronomy

The 77 - 170 metre wide asteroid 2002 XS90 will make a close pass (29.1 lunar distances, 0.0748 AU), travelling at 17.18 km/second, to the Earth-Moon system on the 14th December, 2010 @ 00:27 UT ±33 minutes.

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