
The Enterprise orbits Planet Q.
Planet Q was an inhabitable planet located in the Arcturian system. By the late 23rd century, Planet Q was the site of a Federation colony. (TOS novelization: The Conscience of the King)
History and specifics
By the 2260s, researcher Thomas Leighton and his wife Martha had located themselves on the colony. During a visit by the Karidian Company of Players in late 2266, Leighton discovered that Anton Karidian was actually the wanted mass murderer, Kodos the Executioner.

Planet Q vicinity.
After making the discovery, Leighton had the USS Enterprise diverted to Planet Q and pleaded with Captain James T. Kirk to investigate and hopefully expose Karidian. (TOS episode: "The Conscience of the King")
Appendices
Connections
References
External link
- Planet Q article at Memory Alpha, the wiki for canon Star Trek.