Draconia

Draconia was the home planet of the Draconians. The Third Doctor visited Draconia several times, once during the beginning of the Dalek-human-Draconian conflict, and once prior to that. (DW: Frontier in Space)

The Tenth Doctor was listing worlds with a mythology involving a horned 'devil' of the likes that Earth and Daemos had, this included Draconia. (DW: The Satan Pit)

Mr Smith once told Luke Smith that Draconia was home to one of many cultures throughout the galaxy which had developed its own brand of astrology. (SJA: Secrets of the Stars)