The Vega Sector (known to the Kilrathi as Krat'na Sector) was a region of space inhabited by colonies of the Terran Confederation and the Empire of Kilrah. It was a major conflict point during the Terran-Kilrathi War. The Terran Confederation increased exploration and colonization of the Vega Sector in 2629. On 2629.105, the TCS Iason made first contact with the Kilrathi in the sector. The TCS Tiger's Claw was permanently assigned to the Vega Sector in 2644. Joan's Fighting Spacecraft published a Vega Sector Supplement. Star systems in the Vega Sector include Alliance, Ardai, Asgard, Baird's Star, Brimstone, Cairo, Cambria, Chengdu, Dakota, Dieno, Eddings, Enyo, Gateway, Gimle, Hammer, Hawkins, Hell's Kitchen, Hubble's Star, Kurasawa, McAuliffe, Montrose, Nifelheim, Pephedro, Planck's Star, Port Hedland, Rostov, Seggallion, Tartarus, Trimble, Vega, Venice and Ymir.
Vega Sector lies directly anti-spinwards of Sol Sector. Vega Sector consists of the Day, Douglas, Downing and Roberts Quadrants. Vega Sector is also known as Alcor, Blackmane, Freya, Hyperion, Nanking, Proxima and Tamayo.
The Vega Sector was one of the major theaters of conflict throughout the entire Terran-Kilrathi War. If the sector were to fall to the Kilrathi Empire, they would gain access to the Sol Sector, the heart of the Terran Confederation. This culminated in the Vega Sector Campaign of the 2650s, in which the Confederation ultimately liberated the sector after destroying the Kilrathi stronghold at Venice. Despite this, Vega was continually harassed throughout the Kilrathi War and many systems would fall during the final stages of the War, in which Humanity almost saw total defeat.