* Astronomy

The 15 - 33 metre wide asteroid 2005 XA will make a close pass (77.7-lunar distances, 0.1996-AU), travelling at 18.10-km/second, to the Earth-Moon system on the 17th March, 2010.

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