2015 QW23 is a very large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2015 QW23 as potentially hazardous because its orbit does not bring it close to Earth.
2015 QW23 orbits the sun every 120,000 days (328.54 years), coming as close as 45.97 AU and reaching as far as 49.25 AU from the sun. Based on its brightness and the way it reflects light, 2015 QW23 is probably between 155.080 to 346.769 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Maryland.
2015 QW23's orbit is 45.00 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 QW23's orbit is determined by observations dating back to April 23, 2012. It was last officially observed on Sept. 10, 2021. The IAU Minor Planet Center records 73 observations used to determine its orbit.
The position of 2015 QW23 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.