* Astronomy

The 490 - 1100 metre wide asteroid 2004 HO will make a close pass (57.1 Lunar Distances, 0.1467 AU), travelling at 15.10 km/s, to the Earth-Moon system on the 27th September, 2009.

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