The 39 - 86 metre wide asteroid 2017 JM2 will make a close pass (5.09 LD, 0.01308 AU), travelling at 14.71 km/second, to the Earth-Moon system on the 15th May 2017 @ 03:49 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).