The 73 - 160 metre wide asteroid 2000 TL1 will make a close pass (64.9 lunar distances, 0.1667 AU), travelling at 11.92 km/second, to the Earth-Moon system on the 23rd May 2014 @ 14:17 UT ±06:40.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).