The 6 - 14 metre wide asteroid 2015 BP will make a close pass (1.8 lunar distances, 0.0047 AU) travelling at 12.68 km/second, to the Earth-Moon system on the 20th January 2015 @ 04:17 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).