* Astronomy

The 76 - 170 metre wide asteroid 2013 WS43 will make a close pass (23.6 lunar distances, 0.0606 AU), travelling at 6.54 km/second, to the Earth-Moon system on the 8th January 2014 @ 17:24 UT ±00:01. 

See more

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