* Astronomy

The 69 - 150 metre wide asteroid 2014 AB17 will make a close pass (18.4 lunar distances, 0.0472 AU), travelling at 15.15 km/second, to the Earth-Moon system on the 15th January 2014 @ 14:56 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).