The 270 - 590 metre wide asteroid 2014 HR178 will make a close pass (22.0 lunar distances, 0.0566 AU), travelling at 10.55 km/second, to the Earth-Moon system on the 1st October 2014 @ 12:55 UT ±08:08.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
