The 17 - 39 metre wide asteroid 2014 GV48 will make a close pass (21.1 lunar distances, 0.0541 AU), travelling at 5.40 km/second, to the Earth-Moon system on the 13th April 2014 @ 11:32 UT ±00:23.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).