* Astronomy

The 490 - 1100 metre wide asteroid 2003 YO3 will make a close pass (63.3 lunar distances, 0.1628 AU), travelling at 16.61 km/second, to the Earth-Moon system on the 26th January, 2011 @ 21:18 UT.

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