Simperia is a planet in Cardassian space.
The planet orbits a red giant star. (ST reference: Star Charts)
In 2375, Damar's Cardassian Liberation Front had a base on Simperia until it was attacked by the Dominion. (DS9 episode: "The Dogs of War")
Meneth, a member of the Aegis, took the form of a Simperian civet when working with the Cardassian Aegis agent Rodal Eight. (DTI novel: Watching the Clock)