The 20 - 45 metre wide asteroid 2003 RU11 will make a close pass (75.1 lunar distances, 0.1931 AU), travelling at 9.22 km/second, to the Earth-Moon system on the 1st July, 2013 @ 05:03 UT ±00:02.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
