The 28 - 62 metre wide asteroid 2014 GG45 made a close pass (5.0 lunar distances, 0.0128 AU), travelling at 20.93 km/second, to the Earth-Moon system on the 9th April 2014 @ 12:08 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).