The 160 - 370 metre wide asteroid 2015 OS78 will make a close pass (32.7 LD, 0.0840 AU) travelling at 22.20 km/second, to the Earth-Moon system on the 26th August 2015 @ 09:30 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).
