The 81 - 180 metre wide asteroid 2015 JP1 will make a close pass (37.3 LD, 0.0959 AU) travelling at 26.90 km/second, to the Earth-Moon system on the 19th May 2015 @ 04:56 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).