* Astronomy

The 400 - 900 metre wide asteroid 1998 FH12 will make a close pass (53.7 lunar distances, 0.1379 AU), travelling at 20.98 km/second, to the Earth-Moon system on the 23rd June, 2011 @ 11:56 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).