The 120 - 260 metre wide asteroid 2017 WJ2 will make a close pass (72.2 lunar distances, 0.18566 AU), travelling at 13.76 km/second, to the Earth on the 25th April 2018 @ 21:43 UT ±1 day 16:07.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).