The 11 - 25 metre wide asteroid 2018 FT3 will make a close pass (23.45 LD, 0.06026 AU), travelling at 3.84 km/second, to the Earth on the 24th March 2018 @ 21:28 UT ±01:12.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).