The 52 - 120 metre wide asteroid 2013 QH17 will make a close pass (72.6 lunar distances, 0.1865 AU), travelling at 7.46 km/second, to the Earth-Moon system on the 19th September, 2013 @ 19:44 UT ±00:17.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
