Pentarus
Pentarus was the primary for the Pentarus planetary system. This system was located in the Alpha Quadrant. Pentarus V was colonized by salenite miners. This planet, and Pentarus II, were classified as M class planets. Likewise, four moons in this system were capable of supporting life. One of these moons, Lambda Paz, was a satellite of Pentarus III. (TNG: "Final Mission")
Pentarus appeared in the starchart Data and Picard were studying in Stellar Cartography in 2371. (Star Trek Generations, display graphic)
The star chart seen in "Generations" depicted the location of planets, stars, and star systems in the Alpha Quadrant. Based on the dimensions of the circles used to mark locations on the star chart seen in "Generations", this star was located relatively far to the USS Enterprise-D.