The 48 - 110 metre wide asteroid 2008 DX will make a close pass (60.5 LD, 0.1555 AU) travelling at 7.09 km/second, to the Earth-Moon system on the 8th March 2015 @ 00:05 UT ±1 day 03:46.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).