Left: close encounters between interstellar comet 3I/ATLAS and Mars at epoch JD 2460951.5 (2025 October 3). Right: close encounters between interstellar comet 3I/ATLAS and Jupiter at epoch JD 2461115.5 (2026 March 16). For clarity, we show only the planets’ orbits (up to Jupiter), whereas in the simulation, we have also considered the three other planets (Saturn, Uranus, Neptune), the four big asteroids (Ceres, Pallas, Juno, Vesta) in the asteroid belt, and five KBOs (Pluto, Makemake, Haumea, Quaoar, Sedna).