The 6 - 14 metre wide asteroid 2014 HL129 will made a close pass (0.8 lunar distances, 0.0020 AU), travelling at 6.37 km/second, to the Earth-Moon system on the 3rd May 2014 @ 08:14 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).