The 580 - 1300 metre wide asteroid 1992 SL will make a close pass (70.0 lunar distances, 0.1798 AU), travelling at 8.19 km/second, to the Earth-Moon system on the 23rd September, 2013 @ 10:25 UT ±00:01. See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).