The 56 - 120 metre wide asteroid 2015 BH514 will make a close pass (22.2 lunar distances, 0.0571 AU) travelling at 20.47 km/second, to the Earth-Moon system on the 4th February 2015 @ 20:38 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).