Effect of different Non-Gravitational accelerations on the trajectory of Interstellar Comet 3I/ATLAS

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 \textsc{Horizons} 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 \textsc{Horizons} together with symmetric and asymmetric H${}_2$O sublimation models derived using \texttt{Find\_Orb} software. We calculate the resulting perijove distances and compare them with our earlier results at epoch JD 2460867.5.

3 pages, 1 figure, Accepted for publication in Research Notes of the AAS (RNAAS)

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