The 70 - 160 metre wide asteroid 2014 OZ111 will make a close pass (44.7 lunar distances, 0.1148 AU), travelling at 8.05 km/second, to the Earth-Moon system on the 1st September 2014 @ 03:08 UT ±00:28.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).