The 17 - 39 metre wide asteroid 2014 SC145 made a close pass (7.6 lunar distances, 0.0195 AU), travelling at 11.36 km/second, to the Earth-Moon system on the 25th September 2014 @ 14:02 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).