* Astronomy

The 120 - 260 metre wide asteroid 2003 SS84 will make a close pass (67.0 lunar distances, 0.1723 AU), travelling at 10.96 km/second, to the Earth-Moon system on the 9th December, 2011 @ 08:51 UT ±00:15.

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