The 26 - 58 metre wide asteroid 2018 FW4 will make a close pass (9.73 lunar distances, 0.02499 AU), travelling at 11.64 km/second, to the Earth on the 5th April 2018 @ 02:28 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).