* Astronomy

The 640 - 1400 metre wide asteroid 2003 HR32 will make a close pass (55.2 lunar distances, 0.1418 AU), travelling at 21.90 km/second, to the Earth-Moon system on the 17th May, 2010.

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