The 19 - 42 metre wide asteroid 2005 GZ128 will make a close pass (28.8 lunar distances, 0.07412 AU), travelling at 9.52 km/second, to the Earth on the 13th April 2018 @ 01:28 UT ±10:41.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).