READ THIS: Outer Planets Mod is no longer being actively maintained through this thread. Click this link to go the new thread, where OPM is being developed by a group of people.
Outer Planets Mod
Outer Planets Mod is a mod that expands the outer edges of the Kerbol system, to create something akin to the real Solar System’s. It adds Kerbalized versions of Saturn, Uranus, Neptune and Pluto, as well as several of these planets' moons. At the moment not all of these planets have moons aro
Unrelatedly, I tested the OPM universe with Principia's N-Body simulation, just for fun. It did better than I expected, but it did not do good.
Here's my report:
Plock and Karen system
Despite Plock's solar orbit trajectory being spun all around due to Karen, the system is stable (it's only 2-body for all intents and purposes, after all). I didn't check, but I suspect that the 2:3 resonance of Plock and Neidon is broken from the initial kick of Karen.