Tarsas III with Starbase 74
Tarsas III is the third planet in the Tarsas system. The Federation Starbase 74 is in orbit around the planet. (TNG:"11001001")
Tarsas III has at least one moon. The planet itself looks remarkably similar to Earth.
- This is of coarse, because stock footage of the original Enterprise entering the Earth Spacedock in orbit of Earth was superimposed with the new Enterprise-D entering the same port.