The 120 - 270 metre wide asteroid 2005 LW3 will make a close pass (43.4 lunar distances, 0.1114 AU), travelling at 16.53 km/second, to the Earth-Moon system on the 29th November, 2010 @ 18:39 UT. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).