The 390 - 870 metre wide asteroid 2007 LE will make a close pass (18.6 lunar distances, 0.0478 AU), travelling at 19.77 km/second, to the Earth-Moon system on the 2nd June, 2012 @ 07:25 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).