The 13 - 29 metre wide asteroid 2014 HT46 will made a close pass (7.0 lunar distances, 0.0179 AU), travelling at 5.21 km/second, to the Earth-Moon system on the 4th May 2014 @ 08:55 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).