Calligar

The Calligar is a species that inhabits a series of sattelites orbiting a world in flame. Their home is only accessible through a temporal rift which only opens once every 33.4 years. First contact with the Federation was made in 2254 by the USS Enterprise under Captain Christopher Pike. Second contact with the Federation was made in 2287 by the USS Enterprise-A under Captain James T. Kirk. (TOS novel: The Rift).