The 190 - 430 metre wide asteroid 2013 YM70 will make a close pass (75.4 lunar distances, 0.1937 AU), travelling at 12.27 km/second, to the Earth-Moon system on the 3rd February, 2014 @ 03:02 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).