The 58 - 130 metre wide asteroid 2000 HB24 wll made a close pass (13.1 lunar distances, 0.0336 AU), travelling at 9.92 km/second, to the Earth-Moon system on the 27th April 2014 @ 06:39 UT ±19:48.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).