The 78 - 170 metre wide asteroid 2015 RE2 made a close pass (43.0 LD, 0.1105 AU) travelling at 17.67 km/second, to the Earth-Moon system on the 4th September 2015 @ 02:19 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).
