Synnax circles a star at the edges of the Blue Drift. Its inhabitants are considered “provincial” by the more urbanite Trantorians. It was the home world of the psychohistorian Gaal Dornick. It is mentioned in the first book that despite its "provincial" nature, it had not been kept away from civilization. Imperial coronations have been broadcast properly in the world. Synnax has only one satellite.
- Foundation (mentioned only)