* Astronomy

The 570 - 1300 metre wide asteroid 2013 PX6 will make a close pass (68.6 lunar distances, 0.1762 AU), travelling at 19.08 km/second, to the Earth-Moon system on the 21st September, 2013 @ 15:01 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).

2013 PX6 = 2010 AA106