The 17 - 37 metre wide asteroid 2015 GZ made a close pass (8.7 LD, 0.0224 AU) travelling at 18.50 km/second, to the Earth-Moon system on the 7th April 2015 @ 23:33 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).
