The 240 - 540 metre wide asteroid 2014 YS43 will make a close pass (66.6 lunar distances, 0.1712 AU) travelling at 22.03 km/second, to the Earth-Moon system on the 1st February 2015 @ 03:19 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).
