The 24 - 54 metre wide asteroid 2015 KV120 will make a close pass (27.6 LD, 0.0709 AU) travelling at 6.80 km/second, to the Earth-Moon system on the 3rd June 2015 @ 11:12 UT ±00:14.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).