Amundsenia is a large asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified Amundsenia as potentially hazardous because its orbit does not bring it close to Earth.
Amundsenia orbits the sun every 1,320 days (3.61 years), coming as close as 1.66 AU and reaching as far as 3.06 AU from the sun. Based on its brightness and the way it reflects light, Amundsenia is probably between 9.651 to 21.579 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.
The rotation of Amundsenia has been observed. It completes a rotation on its axis every 7.76 hours.
Amundsenia's orbit is 0.65 AU from Earth's orbit at its closest point. This means that there is an very 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.
Amundsenia's orbit is determined by observations dating back to Aug. 4, 1926. It was last officially observed on Dec. 14, 2020. The IAU Minor Planet Center records 2,686 observations used to determine its orbit.
The position of Amundsenia 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.