The 61 - 140 metre wide asteroid 2015 KL120 will make a close pass (75.8 LD, 0.1948 AU) travelling at 4.52 km/second, to the Earth-Moon system on the 28th June 2015 @ 22:18 UT ±00:08.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).