The 180 - 410 metre wide asteroid 2015 XE352 will make a close pass (27.1 lunar distances, 0.06979 AU), travelling at 9.01 km/second, to the Earth on the 18th April 2018 @ 14:41 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).