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 Horizons has updated the non-gravitational parameters of the comet based on the CO2 sublimation model, where g(r)= 1/r2. In this research note, we use the non-gravitational accelerations from Horizons together with symmetric and asymmetric H2O 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.
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