Asteroid 2013 YB in the constellation Pisces makes a close approach (0.005 AU, 1.96 lunar distances) to the Earth on the 23rd December 2017
Magnitude: 23.6 V
The 1.5 - 3.0 metre wide asteroid 2013 YB made a close pass (0.07 lunar distances, 0.0002 AU), travelling at 10.52 km/second, to the Earth-Moon system on the 23rd December 2013 @ 12:51 UT ±00:01.
See moreThe Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).