An Earth colony facing the threat of famine, used by Doctor Thomas Leighton as a pretext to bring Kirk and the Enterprise to Planet Q.
Cygnia Minor is an Earth colony mentioned in the Original Series episode The Conscience of the King.
The Enterprise is diverted to Planet Q by a message from the scientist Thomas Leighton, who reports that he has developed a synthetic food capable of ending the danger of famine on Cygnia Minor. When Kirk arrives he learns that the claim was a lure.
Leighton really wants Kirk to look at the actor Anton Karidian, whom he believes to be Kodos the Executioner, the governor who ordered the massacre on Tarsus IV. Kirk is angry at being misled over a relief matter, but Leighton's murder soon afterwards convinces him to investigate.