The 180 - 390 metre wide asteroid 1998 HD14 will make a close pass (72.1 LD, 0.1852 AU) travelling at 14.86 km/second, to the Earth-Moon system on the 14th April 2015 @ 19:55 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).