The 29 - 65 metre wide asteroid 2015 BA511 will make a close pass (38.4 LD, 0.0987 AU) travelling at 5.89 km/second, to the Earth-Moon system on the 24th February 2015 @ 04:07 UT ±00:05.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).