The 7 - 16 metre wide asteroid 2015 DB will make a close pass (1.3 LD, 0.0033 AU) travelling at 8.85 km/second, to the Earth-Moon system on the 18th February 2015 @ 19:27 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).