* Astronomy

The 28 - 62 metre wide asteroid 2013 SM20 will make a close pass (18.1 lunar distances, 0.0466 AU), travelling at 5.78 km/second, to the Earth-Moon system on the 8th October 2013 @ 18:42 UT ±00:03. 

See more

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