* Astronomy

The 25 - 55 metre wide asteroid 2014 BY43 will make a close pass (20.6 lunar distances, 0.0530 AU), travelling at 19.47 km/second, to the Earth-Moon system on the 30th January, 2014 @ 19:00 UT ±00:02. 

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