The 58 - 130 metre wide asteroid 2014 PZ58 will make a close pass (46.0 lunar distances, 0.1183 AU), travelling at 3.85 km/second, to the Earth-Moon system on the 8th September 2014 @ 03:18 UT ±00:02.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).