471339 (2011 ON45) is a large asteroid with an orbit between Jupiter and Neptune. NASA JPL has not classified 2011 ON45 as potentially hazardous because its orbit does not bring it close to Earth.
2011 ON45 orbits the sun every 14,600 days (39.97 years), coming as close as 9.82 AU and reaching as far as 13.58 AU from the sun. Based on its brightness and the way it reflects light, 2011 ON45 is probably between 13.260 to 29.651 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Philadelphia.
2011 ON45's orbit is 8.84 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.
2011 ON45's orbit is determined by observations dating back to July 27, 2011. It was last officially observed on Oct. 27, 2020. The IAU Minor Planet Center records 182 observations used to determine its orbit.
The position of 471339 (2011 ON45) 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.