Effect of Different Non-gravitational Accelerations on the Trajectory of Interstellar Comet 3I/ATLAS
Abstract
Abstract Comet C/2025 N1 or 3I/ATLAS is the third confirmed interstellar object. It has passed perihelion on 2025 October 29, and is currently on a path to leave the solar system. During its outbound journey, it will pass close to Jupiter at a distance of 0.358 au. NASA JPL H orizons has updated the non-gravitational parameters of the comet based on the CO 2 sublimation model, where g ( r ) = 1/ r 2 . In this research note, we use the non-gravitational accelerations from H orizons together with symmetric and asymmetric H 2 O sublimation models derived using Find_Orb software. We calculate the resulting perijove distances and compare them with our earlier results at epoch JD 2460867.5.
Fields of Study & Subjects
Astro and Planetary Science
Stellar
planetary
and galactic studies
Gamma-ray bursts and supernovae
Publication details
- Journal / source
- Research Notes of the AAS
- Publisher
- American Astronomical Society
- Volume
- 10
- Issue
- 1
- Pages
- 19–19
- Publication date
- 27 January 2026