* Astronomy

The 16 - 36 metre wide asteroid 2010 XA11 will make a close pass (65.2 lunar distances, 0.1676 AU), travelling at 7.87 km/second, to the Earth-Moon system on the 12th March, 2012 @ 22:18 UT ±08:22.

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