The 790 - 1800 metre wide asteroid 2006 SV19 will make a close pass (59.2 Lunar Distances, 0.1522 AU), travelling at 11.17 km/s, to the Earth-Moon system on the 21st August, 2009. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).