The 160 - 350 metre wide asteroid 2014 GL49 will make a close pass (66.2 lunar distances, 0.1702 AU), travelling at 10.94 km/second, to the Earth-Moon system on the 14th April 2014 @ 08:16 UT ±00:16.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).