The 100 - 230 metre wide asteroid 2015 KS154 will make a close pass (32.9 LD, 0.0845 AU) travelling at 20.02 km/second, to the Earth-Moon system on the 6th June 2015 @ 14:28 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).