The Twelve Colonies of Kobol constitute the main human civilization in the reimagined Battlestar Galactica television series and its spin-off Caprica. The colonies are located in the Cyrannus star system (or cluster.) It is comprised of four stars, two binary systems comprised of a G-class primary and a K-class secondary star. The two binary systems are gravitationally bound together and orbit a central point with a period of 546,892 years. The two pairs are 0.16 light years apart. Each star is named for the Kobol lord of the Sun, Helios.