The 13 - 30 metre wide asteroid 2015 MA will make a close pass (1.7 LD, 0.0044 AU) travelling at 16.22 km/second, to the Earth-Moon system on the 17th June 2015 @ 02:08 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).