The 16 - 37 metre wide asteroid 2014 HT190 will make a close pass (28.7 lunar distances, 0.0738 AU), travelling at 8.29 km/second, to the Earth-Moon system on the 23rd May 2014 @ 01:40 UT ±00:07.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).