This simulation shows the Kepler-36 planetary system, as detailed in the Wikipedia article at:
https://en.wikipedia.org/wiki/Kepler-36
This planetary system is unusual because the two planets have very close orbits, with their semi-major axes differing by only 0.013 AU.
You can run the simulation to see how the planets move. Since different computers run at different speeds, you may need to edit the evolution time step to get the simulation to run at an acceptable rate.
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