The 380 - 860 metre wide asteroid 2004 MW2 will make a close pass (39.9 LD, 0.1026 AU) travelling at 27.17 km/second, to the Earth-Moon system on the 25th June 2015 @ 19:38 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).