The 1300 - 2800 metre wide asteroid 137062 (1998 WM) will make a close pass (75.9 lunar distances, 0.19505 AU), travelling at 15.29 km/second, to the Earth on the 23rd May 2018 @ 19:06 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).