The 110 - 250 metre wide asteroid 2006 UE17 will make a close pass (53.5 lunar distances, 0.1375 AU), travelling at 8.99 km/second, to the Earth-Moon system on the 12th April, 2012 @ 01:10 UT ±2 days 05:18. See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).