* Astronomy

The 160 - 350 metre wide asteroid 2007 UR3 will make a close pass (53.8 lunar distances, 0.1382 AU), travelling at 1.76 km/second, to the Earth-Moon system on the 11th January, 2010.

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