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From the apparent stability of the orbits of the planets in our solar system (let's leave out EKB objects, for now), what limits can we put on past close encounters with massive, compact objects, such as stars, rogue Jupiters, and black holes?
For simplicity, assume an asymptotic closing speed of ~<100 km/s. Also assume any episodes of bombardment have zero effect (e.g. perturbations of Oort cloud comets, and subsequent collisions with any planets, do not result in changed planetary orbits).
For simplicity, assume an asymptotic closing speed of ~<100 km/s. Also assume any episodes of bombardment have zero effect (e.g. perturbations of Oort cloud comets, and subsequent collisions with any planets, do not result in changed planetary orbits).