* Astronomy

The 190 - 440 metre wide asteroid 2004 JO1 will make a close pass (76.9 lunar distances, 0.1975 AU), travelling at 17.87 km/second, to the Earth-Moon system on the 22nd December, 2012 @ 17:30 UT ±2 days 15:30. 

See more 

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