The 27 - 60 metre wide asteroid 2015 DB199 will make a close pass (37.5 LD, 0.0963 AU) travelling at 5.27 km/second, to the Earth-Moon system on the 16th March 2015 @ 07:20 UT ±00:07.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).