* Astronomy

The 59 - 130 metre wide asteroid 2013 YK48 will make a close pass (15.5 lunar distances, 0.0399 AU), travelling at 12.55 km/second, to the Earth-Moon system on the 2nd January 2014 @ 19:29 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).