* Astronomy

The 44 - 99 metre wide asteroid 2013 RU9 will make a close pass (33.3 lunar distances, 0.0856 AU), travelling at 8.13 km/second, to the Earth-Moon system on the 3rd October 2013 @ 00:24 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).