Sunnydale has a gas giant, one asteroid belt, and five terrestrial worlds orbiting her.  Scorchdale and Sizzledale are too close to the sun to be habitable under any common understanding of the word.  Scorchdale’s heavy mineral resources and low gravity make it a favored mining outpost though.  It’s tidelocked to the star, one side eternally scorched, and the dark side forever frozen.  Most people live on the dark side.