A star map showing Khitomer within the Romulan Star Empire in 2369
The Khitomer system was an inhabited star system in the Klingon Empire. This system contained the inhabited planet Khitomer. The planet was the location of Camp Khitomer and a Klingon colony which fell victim to a Romulan attack in 2346. (TNG: "Sins of the Father")
In 2369, the location of Khitomer was labeled on the Deep Space 9 Traffic Comm Database star chart. (TNG: "Birthright, Part II", display graphic)
The name of this system appeared in a display readout that appeared in "Sins of the Father" but was not referenced in dialog.
The Khitomer system was a trinary star system located in the Beta Quadrant. Primary was a Class F star. It had a magnitude of +3, which was 10 times brighter than Sol. A stellar companion was a Class F star, too. The third stellar companion was a Class K star. (Star Trek: Star Charts, page 56)