The 630 - 1400 metre wide asteroid 2005 GQ21 will make a close pass (77.0 lunar distances, 0.1980 AU), travelling at 23.86 km/second, to the Earth-Moon system on the 12th October, 2012 @ 16:54 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).
