523955 (1998 UU43) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1998 UU43 as potentially hazardous because its orbit does not bring it close to Earth.
1998 UU43 orbits the sun every 79,900 days (218.75 years), coming as close as 31.71 AU and reaching as far as 40.89 AU from the sun. Based on its brightness and the way it reflects light, 1998 UU43 is probably between 88.015 to 196.807 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Delaware.
1998 UU43's orbit is 30.70 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.
1998 UU43's orbit is determined by observations dating back to Oct. 22, 1998. It was last officially observed on Jan. 10, 2018. The IAU Minor Planet Center records 61 observations used to determine its orbit.
The position of 523955 (1998 UU43) 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.