2015 KK173 is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2015 KK173 as potentially hazardous because its orbit does not bring it close to Earth.
2015 KK173 orbits the sun every 89,100 days (243.94 years), coming as close as 29.21 AU and reaching as far as 48.91 AU from the sun. Based on its brightness and the way it reflects light, 2015 KK173 is probably between 40.230 to 89.958 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Rhode Island.
2015 KK173's orbit is 28.20 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
2015 KK173's orbit is determined by observations dating back to Feb. 25, 2015. It was last officially observed on May 21, 2017. The IAU Minor Planet Center records 30 observations used to determine its orbit.
The position of 2015 KK173 is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.