The 31 - 70 metre wide asteroid 2013 UR4 will make a close pass (47.0 lunar distances, 0.1209 AU), travelling at 5.76 km/second, to the Earth-Moon system on the 28th October, 2013 @ 20:56 UT ±01:23.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
