Asteroid (138925) 2001 AU43 is at magnitude 13.5V in the constellation Capricornus at 18:30 UT, 2nd August 2017.
The 1900 - 3900 metre wide asteroid 2001 AU43 in the constellation Aquila will make a close pass (0.2117 AU) travelling at 35.9 km/second, to the Earth-Moon system on the 1st August 2017 @ 06:12 UT ±00:01.
Magnitude: 13.6 V
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).