The 71 - 160 metre wide asteroid 2006 SG7 will make a close pass (33.4 lunar distances, 0.0857 AU), travelling at 16.47 km/second, to the Earth-Moon system on the 6th June, 2012 @ 11:15 UT ±18:32.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).