The Bajoran system, also known as the B'Hava'El system, was an inhabited planetary system in the Alpha Quadrant. This system contained fourteen planets, with Bajor being the largest. A plasma field called the Denorios Belt was located between the orbits of Bajor IX and Bajor X, forming a natural border between the inner and outer system. (DS9: "The Nagus"; PIC: "Maps and Legends")
In 2399, the location of this system was labeled on a star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters. This system was in or near to Federation space. (PIC: "Maps and Legends")
In 2372, the Klingon Empire attempted to secretly place a cloaked minefield around the Bajoran system, which would have allowed them to cut it off from the galaxy. The minefield was discovered and detonated by the crew of the USS Defiant. (DS9: "Sons of Mogh")
The Dominion occupied the Bajoran system (though not Bajor itself) from the beginning of the Dominion War in late 2373, until they were forced out in the aftermath of Operation Return the following year. (DS9: "Call to Arms", "Sacrifice of Angels")
- Bajoran sun (primary)
The Star Trek: Deep Space Nine Technical Manual (p.17) stated that the Bajor system is 50.3 light years from the Federation's inner perimeter. In the same reference work, on page 4, there was a system map of this system.
Star Trek: Star Charts (p. 34) stated that Bajor was the seventh planet of this system.
According to StarTrek.com, Bajor VIII is also known as "Andros".