- One hundred fifty men, women, and children, led by Elias Sandoval, depart Earth for Omicron Ceti III to establish the future Omicron colony. (TOS: "This Side of Paradise")
- Ben Childress, Herm Gossett, and Benton partner up to establish a mining company on Rigel XII. (TOS: "Mudd's Women")
- An infant Lactran, later encountered by the USS Enterprise landing party in 2269, is born on Lactra VII. (TAS: "The Eye of the Beholder")
- According to the Star Trek: Star Charts (p. 53), the planet Ardana is admitted to the United Federation of Planets.