Perfecton was the homeworld of the Perfecton race.
Its sun was a very old, very diffuse red giant.
Perfectons were a technologically advanced civilisation. In particular, they were able to control the climate of the planet. They disappeared approximately 5000 years prior to 2593. The mystery of their disappearance caused Earth Central to announce the planet in quarantine, which was lifted in 2593. (AUDIO: Oh No It Isn't!)