The 280 - 620 metre wide asteroid 2015 XK1 will make a close pass (51.2 lunar distances, 0.13172 AU), travelling at 11.74 km/second, to the Earth on the 12th May 2018 @ 05:41 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).
