Arkaria was an inhabited planet. This was the homeworld of the humanoid Arkarians and the Arkarian horn fowl. Arkaria Base was a Starfleet installation on the planet's surface and remotely controlled the Remmler Array orbiting the planet. According to Data, Arkaria featured some interesting weather patterns and its ambient temperatures were slightly above what was considered comfortable for Humans.
In 2369, the USS Enterprise-D arrived at Arkaria to be serviced by the Remmler Array. During the procedure, Arkaria Base was temporarily seized by Arkarian terrorists in league with a group attempting to steal trilithium resin from the Enterprise. (TNG: "Starship Mine")