The Tomerela system was a star system located in the Gamma Quadrant. It was located relatively far from the more frequently travelled space lanes. (Last Unicorn RPG module: Star Trek: Deep Space Nine Core Game Book)

It contained a single star, an A class blue star with a brightness of magnitude +7. (ST reference: Star Charts) It had a number of planets, including Tomerela IV, which was the homeworld of the Wadi race. (Last Unicorn RPG module: Star Trek: Deep Space Nine Core Game Book)