The 1200 - 2700 metre wide asteroid 2000 LC16 will make a close pass (75.6 Lunar Distances, 0.1943 AU), travelling at 5.39 km/s, to the Earth-Moon system on the 17th August, 2009. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).