* Astronomy

The 270 - 600 metre wide asteroid 2002 NN4 will make a close pass (63.0 lunar distances, 0.1619 AU), travelling at 8.95 km/second, to the Earth-Moon system on the 18th June, 2011 @ 18:03 UT ±00:01.

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