The 31 - 68 metre wide asteroid 2008 CY21 will make a close pass (58.6 lunar distances, 0.1505 AU), travelling at 9.53 km/second, to the Earth-Moon system on the 27th June, 2011 @ 14:54 UT ±1 day 02:31. See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).