TY CONF TI The effect of encounters with interstellar objects of planetary and substellar masses on the Solar system dynamics KW planets and satellites: dynamical evolution and stability; ISM: individual objects: 1I/'Oumuamua KW 2I/Borisov JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Mikryukov, D.. AU Shevchenko, I.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences