The 560 - 1200 metre wide asteroid 2003 RX7 will make a close pass (61.2 lunar distances, 0.1573 AU) travelling at 15.17 km/second, to the Earth-Moon system on the 6th November 2014 @ 06:23 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).