Just outside Dominion space near the Obatta Cluster, the Teplan system was a planetary system in the Gamma Quadrant containing at least one Class M planet, homeworld of the Teplan people. (DS9: "The Quickening")

A mural depicting the homeworld seen in the episode shows what might be two suns, thus suggesting that the Teplan system may be a binary system. Only one sun is ever visible in the sky, but one scene shows the sky going from night to day even as that sun remains in essentially the same position, which would also be consistent with an unseen second sun providing most of the light.
According to Star Trek: Star Charts (p. 75), the system's primary was an A-class star.
According to StarTrek.com, the primary was named Teplan.
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