The 52 - 120 metre wide asteroid 2015 MO89 will make a close pass (20.2 LD, 0.0518 AU) travelling at 8.30 km/second, to the Earth-Moon system on the 8th July 2015 @ 10:56 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).
