The 51 - 110 metre wide asteroid 2004 HX53 will make a close pass (29.5 lunar distances, 0.0758 AU), travelling at 8.22 km/second, to the Earth-Moon system on the 14th October, 2013 @ 08:35 UT ±00:08.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
