The 880 - 2000 metre wide asteroid (7822) 1991 CS will make a close pass (62.1 LD, 0.1596 AU) travelling at 18.95 km/second, to the Earth-Moon system on the 4th September 2015 @ 23:29 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).