The 14 - 31 metre wide asteroid 2014 SS261 made a close pass (6.4 lunar distances, 0.0163 AU), travelling at 6.15 km/second, to the Earth-Moon system on the 28th September 2014 @ 09:54 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).
