SSB Version 0.1 (Alpha Version 2)
Based on RSS v19.0.3, Actually compatible with KSP 1.8.1+.
Use SSB (Solar System Barycenter) for more precise (smaller variance) orbit data of Saturn, Uranus, Neptune and Pluto
Re-correct SMA by using T&a relation to keep T correct with real-world value while not changing SMA too much
(because SSB is 0.1% "heavier" than Sun mostly due to Jupiter, and SSB is impossible to be orbited without principia)
(Sun.cfg is also edited, using Sun GM provided by Earth's mean T&a)