Sorry to be so Picky.
It is not a problem with the Solar System - we already know the Average Surface Temperature of the actual existing Planets -
Which depends upon distance from the Sun, the actual energy output from the Sun, perhaps related to the Surface Temperature and Mass. It also of course depends on the composition of the Atmosphere ( if any ), and perhaps Geological Activity ( even "ice geology" in some cases ).
However - actual Planets even in the Solar System WILL have Average Surface Temperatures, Atmospheric Compositions ( or none ), Water Coverage ( or none ).
So we create a new Star System - define the Star Mass, Surface Termperature, Colour
Hmmm - it would really be nice to actually SET the Star Class - K5, T2, A8 - Etc.
So we put Planets into Orbit - setting Mass, Diameter. We adjust their orbital data, distance from Star, degree of ellipticity, angle of orbit to normal plane.
Hmm - how hot is it on the surface ?? How much Water ?? What Atmosphere ??
Is it Habitable ?? How can we tell ??