The 5 - 10 metre wide asteroid 2015 GL13 made a close pass (0.5 LD, 0.0012 AU) travelling at 13.95 km/second, to the Earth-Moon system on the 16th April 2015 @ 07:53 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).