The 97 - 220 metre wide asteroid 2015 BK509 will make a close pass (55.4 LD, 0.1424 AU) travelling at 9.73 km/second, to the Earth-Moon system on the 5th March 2015 @ 21:59 UT ±00:02.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
