The 15 - 33 metre wide asteroid 2014 QY33 will make a close pass (6.5 lunar distances, 0.0168 AU), travelling at 14.48 km/second, to the Earth-Moon system on the 30th August 2014 @ 08:03 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).