* Astronomy

The 390 - 860 metre wide asteroid 2003 AL73 will make a close pass (48.2 lunar distances, 0.1238 AU), travelling at 15.31 km/second, to the Earth-Moon system on the 26th May, 2011 @ 11:27 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).