Ceto is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified Ceto as potentially hazardous because its orbit does not bring it close to Earth.
Ceto orbits the sun every 361,000 days (988.36 years), coming as close as 17.73 AU and reaching as far as 180.57 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, Ceto is probably between 135.069 to 302.023 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Massachusetts.
The rotation of Ceto has been observed. It completes a rotation on its axis every 4.43 hours.
Ceto's orbit is 16.80 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.
Ceto's orbit is determined by observations dating back to Jan. 31, 1987. It was last officially observed on May 12, 2020. The IAU Minor Planet Center records 278 observations used to determine its orbit.
The position of Ceto 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.