Sigma Octanus system Distance from Sol Spectral type Magnitude Constellation Bodies Affiliation Notable facts [Source] • [Talk] Sigma Octanus is a planetary system in FLEETCOM Sector Three, with at least four planets orbiting a binary star. The system is home to the human colony world of Sigma Octanus IV, which had a population of over 17 million people prior to the Battle of Sigma Octanus IV.