* Astronomy

The 230 - 510 metre wide asteroid 2010 XO56 will make a close pass (70.1 lunar distances, 0.1802 AU), travelling at 19.72 km/second, to the Earth-Moon system on the 22nd June, 2011 @ 15:18 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).