* Astronomy

The 53 - 120 metre wide asteroid 2013 YT2 will make a close pass (73.1 lunar distances, 0.1878 AU), travelling at 4.07 km/second, to the Earth-Moon system on the 9th January 2014 @ 17:45 UT ±00:57. 

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