The 11 - 25 metre wide asteroid 2014 FZ will make a close pass (7.5 lunar distances, 0.0194 AU), travelling at 4.21km/second, to the Earth-Moon system on the 25th March, 2014 @ 02:08 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).