The 18 - 41 metre wide asteroid 2015 DU198 will make a close pass (16.7 LD, 0.0429 AU) travelling at 8.34 km/second, to the Earth-Moon system on the 4th March 2015 @ 12:31 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).