The 18 - 40 metre wide asteroid 2016 KL will make a close pass (49.4 lunar distances, 0.12701 AU), travelling at 12.02 km/second, to the Earth on the 30th May 2018 @ 00:29 UT ±15:18.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).