The 69 - 150 metre wide asteroid 2015 BX509 will make a close pass (35.4 lunar distances, 0.0910 AU) travelling at 12.97 km/second, to the Earth-Moon system on the 5th February 2015 @ 15:23 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).
