* Astronomy

The 52 - 120 metre wide asteroid 2010 XR10 will make a close pass (64.1 lunar distances, 0.1648 AU), travelling at 4.53 km/second, to the Earth-Moon system on the 1st January, 2011 @ 10:08 UT ±01:18.

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