* Astronomy

The 180 - 400 metre wide asteroid 1994 XL1 will make a close pass (46.0 lunar distances, 0.1182 AU), travelling at 16.36 km/second, to the Earth-Moon system on the 28th November, 2011 @ 15:45 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).