The 530 - 1200 metre wide asteroid 1996 RG3 will make a close pass (62.6 lunar distances, 0.1608 AU), travelling at 11.24 km/second, to the Earth-Moon system on the 26th November, 2013 @ 10:51 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).