The 130 - 280 metre wide asteroid 2015 KR154 will make a close pass (61.1 LD, 0.1570 AU) travelling at 11.89 km/second, to the Earth-Moon system on the 26th June 2015 @ 20:37 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).