* Astronomy

The 84 - 190 metre wide asteroid 2013 PA7 will make a close pass (65.6 lunar distances, 0.1686 AU), travelling at 2.81 km/second, to the Earth-Moon system on the 25th August, 2013 @ 23:03 UT ±02:03. 

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).