The 190 - 430 metre wide asteroid 2014 PA59 will make a close pass (68.7 lunar distances, 0.1765 AU), travelling at 13.88 km/second, to the Earth-Moon system on the 11th August 2014 @ 16:40 UT ±00:10.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).