* Astronomy

The 170 - 380 metre wide asteroid 2007 CN26 will make a close pass (11.9 lunar distances, 0.0305 AU), travelling at 6.85 km/second, to the Earth-Moon system on the 28th August, 2013 @ 08:08 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).