Stygeon Prime, otherwise known as Stygeon, was a mountainous and snow-covered planet located in the Stygeon system of the Outer Rim Territories’ Nuiri sector. The planet was 9,100 kilometers in diameter, and held a Type I atmosphere, with a mixture of oxygen, hydrogen and nitrogen, as well as a thin and cold climate. In orbit of a single star and orbited by two moons, Stygeon was almost completely devoid of native life, except for the large tibidee creatures that called it home.