Editing Sigma Octanus system

{{Status|Canon}}
{{Stellar infobox
|name          = Sigma Octanus
|image         = 
|bodies        = At least 4
|affiliation   = [[Unified Earth Government]]
|notable       = Site of the [[Battle of Sigma Octanus IV]]
}}

The '''Sigma Octanus system''' is a planetary system with at least four planets orbiting a binary star located in [[FLEETCOM Sector Three]].<ref name="binary">'''Halo: The Fall of Reach''', ''page 211'' (2001); ''page 242'' (2010)</ref> The system is home to the [[UEG]] colony world of [[Sigma Octanus IV]], which had a population of over 17 million people prior to the [[Battle of Sigma Octanus IV]].<ref>'''Halo: The Fall of Reach''', ''page 144''</ref>

During the Battle of Sigma Octanus IV, [[Captain (Navy)|Captain]] [[Jacob Keyes]] performed the famous [[Keyes Loop]] in the system.<ref>'''Halo: The Fall of Reach''', ''pages 144-146''</ref> In addition, [[John-117]] and the [[Blue Team]] found a strange [[Forerunner]] [[Sigma Octanus IV Artifact|artifact]] in [[Côte d'Azur]] [[Côte d'Azur Museum of Natural History|Museum of Natural History]] on Sigma Octanus IV while the [[Covenant]] tried to retrieve it.<ref>'''Halo: The Fall of Reach''', ''page 208''</ref> The system remained under UNSC control after the battle which ended in a rare UNSC victory.

==Trivia==
*While there is no actual star with the designation "Sigma Octanus", there is one named "Sigma Octantis" located 270 light years from the [[Sol system]]. However, it is unlikely to be the same system for a number of reasons: The real-world Sigma Octantis is classified as an F0 III-type giant instead of a binary star. In addition, such distance would make Sigma Octanus the astronomically farthest known UEG colony, significantly farther than the [[Outer Colonies|Outer Colony]] system [[23 Librae]] which was considered to be "behind enemy lines" by 2535. Furthermore, {{UNSCShip|Iroquois}} traveled from the system to [[Reach]] in less than a month. Traveling over 250 light years in such timeframe would be difficult with war-period human slipspace velocities.
*Although the system contains a binary star,<ref name="binary"/> one of the stars (likely the primary) is apparently known as Sigma Octanus as it is stated that "light from Sigma Octanus" reflected off the debris of the battle in the system.<ref>'''Halo: The Fall of Reach''', ''page 215'' (2001)</ref>

==List of appearances==
*''[[Halo: The Fall of Reach]]'' {{1st}}
*''[[Halo: Fall of Reach]]''
**''[[Halo: Fall of Reach - Covenant|Covenant]]''
*''[[Halo Mythos]]''

==Sources==
{{Ref/Sources}}

{{UNSCSectors}}

[[Category:Planetary systems]]