The 41 - 92 metre wide asteroid 2017 EK will make a close pass (5.0 LD, 0.0127 AU) travelling at 12.68 km/second, to the Earth-Moon system on the 13th March 2017 @ 23:35 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).