* Astronomy

The 420 - 940 metre wide asteroid 2006 JF42 will make a close pass (23.1 lunar distances, 0.0595 AU), travelling at 10.99 km/second, to the Earth-Moon system on the 18th May, 2011 @ 06:05 UT ±00:03. 

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

Magnitude=14.3