lanephil

It sounds like the object's final (far away/intersetllar) departure velocity (relative to the sun) is increased in comparison to it's initial (far away/interstellar) approach velocity. By how much? millimeters per second? meters per second? more?

(I understand from Karen a mass estimate for the object of a billion kilograms. Thanks! How about the models for outgassing; any mass estimates?)

Any data (or educated guesses) for the mass of Oumuamua? How about for the total mass offgassed during Solar System transit? If not kilogram numbers, perhaps a ratio?