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Feb 12, 2019 at 20:09 comment added Makyen It's possible that the perturbations are a new thing as a result of a massive body entering the system, but that doesn't bode well for the long-term stability of the planet's orbit.
Feb 12, 2019 at 20:09 comment added Makyen While the orbit being perturbed by other massive objects in the solar system is certainly possible, this is unlikely to be stable. In the long term, it's much more likely to result in the planet being perturbed into some alternate, stable orbit, being ejected from that solar system, or colliding with some other large body in the system. It's unlikely for something which is being perturbed within a human-noticeable time-frame to have had an orbit that's stable long enough for life to have developed and flourished.
Feb 12, 2019 at 10:39 history answered Chronocidal CC BY-SA 4.0