The 150 - 340 metre wide asteroid 2015 DD198 will make a close pass (65.9 LD, 0.1694 AU) travelling at 7.29 km/second, to the Earth-Moon system on the 27th April 2015 @ 15:05 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).