Running with the whole thing, there was a passage that seemed odd. Something saying a Jupiter mass object would disrupt nothing gravitationally.
That’s a hmmm. Back when there was talk of planetary alignment and earthquakes, it was popular to have someone stand next to someone and say “I have more gravitational influence on you than Jupiter”. 1/R^2 and all.
But if this thing passes through at some speed slow enough some stable systems should become not stable. Or wrong word. Should become different. Stable in a new config.