The 64 - 140 metre wide asteroid 2018 FA1 will make a close pass (41.67 lunar distances, 0.107 AU), travelling at 17.55 km/second, to the Earth on the 28th March 2018 @ 04:46 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).