* Astronomy

The 120 - 270 metre wide asteroid 2010 XG3 will make a close pass (56.1 lunar distances, 0.1441 AU), travelling at 5.20 km/second, to the Earth-Moon system on the 28th December, 2010 @ 18:58 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).