The 9 - 19 metre wide asteroid 2018 FZ3 will make a close pass (0.50 lunar distances, 0.00128 AU), travelling at 14.09 km/second, to the Earth on the 23rd March 2018 @ 16:21 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).