* Astronomy

The 19 - 42 metre wide asteroid 2014 BT43 will make a close pass (9.8 lunar distances, 0.0252 AU), travelling at 11.27 km/second, to the Earth-Moon system on the 11th February 2014 @ 14:49 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).