For the similarly named planet, please see Tarsus IV.
Tarsas IV was the inhabited fourth planet of its system. The system was located in Sector 001, Alpha Quadrant. (TNG-R: "Conspiracy", okudagram)
In 2328, this was a destination for passengers traveling from Planet Q via commercial transport. Lolita Fatjo traveled on the SS Manoa, Jimmy Berndt traveled on the SS Kogin, and J.P. Farrell and Carl Banks traveled on the SS Wisconsin. (TNG-R: "Inheritance", okudagram)
This planet was only mentioned in writing.