The 52 - 120 metre wide asteroid 2017 KR27 in the constellation Ursa Major will make a close pass (6.99 LD, 0.01797 AU), travelling at 12.56 km/second, to the Earth-Moon system on the 6th June 2017 @ 03:30 UT ±00:01.
Magnitude: 18.4 V
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).