This item has nothing to do with migration , but it shows the resonance of the planet Neptune and Pluto .
The sim was run for about 9000 years , showing the outer planets .
Screen scale is 100AU .
Neptune was taken as the rotating frame reference and shows itself as the green line at the left .
The frame was taken "edge on" , so the solar system is seen from aside .
I kew the orbit of Pluto is odd , but this is hardly to understand ....

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Vieuwed from a point 90° rotated to this shows an even funnier picture .