Bajor sector

A map of the Bajor sector showing the location of Klingon mines in 2372.

The Bajor sector, or Bajoran sector, is a sector in the Alpha Quadrant containing the Bajoran system, the Federation space station Deep Space 9 and Starfleet's Antares Ship Yards.

In the mirror universe, Terok Nor was the center of authority for the sector. (DS9: "Crossover")

In an alternate timeline Starfleet had to leave Deep Space 9 and the Bajoran sector. The Klingon Empire took over the control of the sector. (DS9: "The Visitor")

The Klingon Empire attempted to place a minefield around the sector in 2372, but their plan was stopped after Worf and Kurn obtained the detonation codes. (DS9: "Sons of Mogh")

In 2375, while he was posing as Wendell Greer, Luther Sloan told Julian Bashir he had many questions about the sector, such as its navigational anomalies and transport patterns. (DS9: "Inter Arma Enim Silent Leges")

According to the Star Trek: Star Charts, the Bajoran system is located only 5.25 light years away from the Cardassian system.

Apocrypha

The non-canon RPG book Star Trek: Deep Space Nine - Narrator's Toolkit, published in 1999, include a chart of the area and indicates that the Bajoran sector is a cubic area (width = 85 ly ; length = 102 ly ; depth = 90 ly) that contains over a dozen of major star systems and many stellar points of interest:

• the Badlands
• the Bajoran system (Bajor, Bajoran wormhole, Deep Space 9, Denorios belt)
• the Cardassian system
• the Ferengi system / Ventarus Idrilon system (six planets including Ferenginar)
• the Chin'toka system
• the Dreon system (eleven planets including a Bajoran colony on Dreon VII)
• the Gemulon system (including a Federation colony on Gemulon V)
• the Monac system (Monac shipyards)
• the Nehru system (four planets including the Federation Nehru colony)
• the Orellius Major system
• the Orellius Minor system
• the Pedrigal system
• the Sanelar system (Bajoran colony of Free Haven)
• the Valo system (Bajoran colonies of Valo I, II and III)
• the Volnar system (Volnar colony affiliated to the Cardassian Union)
• Starbase 375
• Altenek Nor shipyards