The 15 - 34 metre wide asteroid 2017 QW1 will make a close pass (52.2 lunar distances, 0.13419 AU), travelling at 3.21 km/second, to the Earth on the 10th June 2018 @ 06:28 UT ±05:07.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).