The 18 - 40 metre wide asteroid 2018 FQ1 will make a close pass (5.63 lunar distances, 0.01447 AU), travelling at 5.94 km/second, to the Earth on the 25th March 2018 @ 20:47 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).