|Alpha Carinae system|
|Alpha Carinae I • Alpha Carinae II • Canopus III • Alpha Carinae V • Canopus Major • Canopus Planet|
This planet was only mentioned in dialogue.
Although never explicitly stated, the planet's name seems to imply it orbits the star Canopus. In the script of "Where No Man Has Gone Before", this planet was referred to as "a Canopus planet", not "the Canopus planet".
According to Star Trek: Star Charts (p. 65, "United Federation of Planets II") and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Canopus system was located in the Beta Quadrant.