The 8 - 18 metre wide asteroid 2007 EH will make a close pass (75.6 lunar distances, 0.1943 AU), travelling at 22.92 km/second, to the Earth-Moon system on the 14th August, 2010 @ 19:55 UT. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).