* Astronomy

The 180 - 400 metre wide asteroid 2013 YL70 will make a close pass (54.5 lunar distances, 0.1400 AU), travelling at 20.58 km/second, to the Earth-Moon system on the 11th January 2014 @ 14:32 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).