The 380 - 860 metre wide asteroid 1998 GL10 will make a close pass (60.5 lunar distances, 0.1554 AU) travelling at 7.73 km/second, to the Earth-Moon system on the 1st February 2015 @ 02:47 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).