* Astronomy

The 7 - 15 metre wide asteroid 2004 DA53 will make a close pass (48.9 lunar distances, 0.1258 AU), travelling at 7.01 km/second, to the Earth-Moon system on the 11th March 2014 @ 01:44 UT ±20:39. 

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