White Rock (Planet)

White Rock, the Dee home world, has an extreme elliptical orbit that reaches the far edges of the habitable ring of their star. At the outer reach of its orbit, the whole planet freezes, and at the inner extreme it gets so hot that the ice caps melt. When the first human prospectors arrived the planet was frozen, so they called it White Rock. The migratory Dee, who were gathered around the equator for the cold season, were so amused by what the Humans called the world that they kept it and refer to it that way when speaking to other races.