* Astronomy

The 90 - 200 metre wide asteroid 2008 PW4 will make a close pass (14.3 lunar distances, 0.0367 AU), travelling at 6.77 km/second, to the Earth-Moon system on the 30th August, 2013 @ 14:18 UT ±2 days 16:39. 

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