The 48 - 110 metre wide asteroid 2004 GD will make a close pass (38.2 LD, 0.0981 AU) travelling at 13.07 km/second, to the Earth-Moon system on the 16th April 2015 @ 09:33 UT ±12:07.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).