The 480 - 1100 metre wide asteroid 2008 TA1 will make a close pass (58.2 Lunar Distances, 0.1496 AU), travelling at 14.57 km/s, to the Earth-Moon system on the 13th May 2014 @ 21:43 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).