The 17 - 38 metre wide asteroid 2015 HT9 will make a close pass (12.1 LD, 0.0312 AU) travelling at 6.13 km/second, to the Earth-Moon system on the 25th May 2015 @ 20:09 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).
