The 150 - 340 metre wide asteroid 2014 SM261 will make a close pass (72.7 lunar distances, 0.1868 AU) travelling at 8.34 km/second, to the Earth-Moon system on the 20th October 2014 @ 05:15 UT ±00:02.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
