The 65 - 150 metre wide asteroid 2015 CW12 will make a close pass (39.8 LD, 0.1022 AU) travelling at 6.30 km/second, to the Earth-Moon system on the 16th March 2015 @ 06:10 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).