The 160 - 360 metre wide asteroid 2007 CA27 will make a close pass (53.9 lunar distances, 0.1384 AU), travelling at 15.77 km/second, to the Earth-Moon system on the 20th January, 2011 @ 00:10 UT ±03:44. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).