The 310 - 680 metre wide asteroid 2005 WE will make a close pass (51.4 lunar distances, 0.1321 AU), travelling at 9.29 km/second, to the Earth-Moon system on the 2nd July, 2010 @ 01:06 UT. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).