The 100 - 230 metre wide asteroid 2017 HW4 will make a close pass (40.0 lunar distances, 0.10298 AU), travelling at 17.01 km/second, to the Earth on the 26th April 2018 @ 12:02 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).
