The 92 - 210 metre wide asteroid 2001 EC16 will make a close pass (67.2 LD, 0.1728 AU) travelling at 8.26 km/second, to the Earth-Moon system on the 26th May 2015 @ 05:21 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).