The name Canopus Major appeared twice on the star chart in Generations. Next to the identifying label, there was a number, "007".
The location of Canopus III, another planet in the system, was depicted in "The Explored Galaxy" star chart. Canopus II was located between the Tholian Assembly and Romulus. Both were identified in DS9: "Call to Arms" as being located in the Alpha Quadrant.