The 100 - 230 metre wide asteroid 2005 JR5 will make a close pass (67.8 LD, 0.1742 AU) travelling at 18.27 km/second, to the Earth-Moon system on the 7th May 2015 @ 12:01 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).