The 11 - 25 metre wide asteroid 2005 YK will make a close pass (23.9 LD, 0.0613 AU) travelling at 8.45 km/second, to the Earth-Moon system on the 6th June 2015 @ 03:35 UT ±2 days 04:22.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).