The 44 - 99 metre wide asteroid 2008 SZ150 will make a close pass (25.2 lunar distances, 0.0648 AU), travelling at 11.55 km/second, to the Earth-Moon system on the 1st October 2013 @ 09:16 UT ±1 day 17:27.
See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).