The 16 - 36 metre wide asteroid 2010 SC will make a close pass (65.3 lunar distances, 0.1679 AU), travelling at 9.56 km/second, to the Earth-Moon system on the 28th August, 2012 @ 09:05 UT ±1 day 19:26.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).