The 200 - 450 metre wide asteroid (416151) 2002 RQ25 will make a close pass (20.0 LD, 0.0514 AU) travelling at 9.93 km/second, to the Earth-Moon system on the 20th February 2015 @ 09:20 UT ±00:01.
The 210 - 480 metre wide asteroid 2002 RQ25 made a close pass (30.1 Lunar Distances, 0.0774 AU), travelling at 8.02 km/s, to the Earth-Moon system on the 18th August, 2009. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).