The 75 - 170 metre wide asteroid 2013 XG17 will make a close pass (23.7 lunar distances, 0.0609 AU), travelling at 19.62 km/second, to the Earth-Moon system on the 17th December, 2013 @ 04:53 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
