The 45 - 100 metre wide asteroid 2014 PQ58 will make a close pass (27.3 lunar distances, 0.0701 AU), travelling at 6.96 km/second, to the Earth-Moon system on the 10th August 2014 @ 14:43 UT ±00:46.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).