The 20 - 45 metre wide asteroid 2007 TN74 will make a close pass (66.9 lunar distances, 0.1718 AU), travelling at 7.36 km/second, to the Earth-Moon system on the 16th July, 2012 @ 08:40 UT ±17:39.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).