511555 (2014 UM225) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2014 UM225 as potentially hazardous because its orbit does not bring it close to Earth.
2014 UM225 orbits the sun every 110,000 days (301.16 years), coming as close as 40.13 AU and reaching as far as 49.65 AU from the sun. Based on its brightness and the way it reflects light, 2014 UM225 is probably between 83.283 to 186.226 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Delaware.
2014 UM225's orbit is 39.10 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.
2014 UM225's orbit is determined by observations dating back to Aug. 8, 2013. It was last officially observed on Aug. 30, 2017. The IAU Minor Planet Center records 44 observations used to determine its orbit.
The position of 511555 (2014 UM225) 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.