The 92 - 210 metre wide asteroid 2007 YM56 will make a close pass (45.3 LD, 0.1165 AU) travelling at 10.66 km/second, to the Earth-Moon system on the 17th February 2015 @ 16:20 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).