The 120 - 270 metre wide asteroid 2015 JJ2 will make a close pass (35.1 LD, 0.0903 AU) travelling at 6.84 km/second, to the Earth-Moon system on the 16th July 2015 @ 06:30 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).