The 45 - 100 metre wide asteroid 2017 FU64 will make a close pass (3.7 LD, 0.0096 AU), travelling at 19.18 km/second, to the Earth-Moon system on the 6th April 2017 @ 19:16 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).