A P-type binary star system has two stars that orbit close to each other, and the system orbits around that. An S-type system, on the other hand, is two stars that orbit at some distance from each other, and thus may each have their own system. I’m going to place such a system in my world, each with it’s own set of planets.
Unlike in the P-type system, where you calculate the stars as though they were one entity, in the S-type you treat them separately. Thus, my results:
|Primary Star||Secondary Star|
|Distance to Barycenter||153.06||246.94|
|Maximum Separation from Barycenter||560.00||600.00|
|Minimum Separation from Barycenter||240.00||200.00|
|Minimum Habitable Zone||1.33||0.57|
|Maximum Habitable Zone||1.91||0.83|
|Forbidden Zone Edge||146.67|
The forbidden zone edge is important. The outer limits of each system need to fall well inside the forbidden zone to prevent the stars from interfering in each other’s system. Looks like we are good there, with stars still close enough to be significant in each other’s sky.
We can then lay out the first system like so:
|Primary System||Orbit||In Kilometers|
|Biggest Gas Giant||7.38||1103997392|
And the second system as:
|Secondary System||Orbit||In Kilometers|
|Biggest Gas Giant||2.93||438555298.6|
This system is actually going to form the core of the worlds controlled by the dominant system race. While humans will exist in this setting, they will not be the dominant race and will, in fact, not be native to this section of the galaxy. The dominant race originated on the habitable planet in the primary system, and later spread through that system and into the secondary system, where they encountered the much less developed race on the habitable planet there and promptly enslaved them.