Gamma Tauri IV was the uninhabited fourth planet in its star system. Located in the Alpha Quadrant, this system was near the Federation-Cardassian border. (TNG: "The Last Outpost"; DS9: "Tears of the Prophets", okudagram).
Prior to 2364, the Federation established an unmanned monitor outpost on this planet. In 2364, the images of a Ferengi D'Kora-class warship were captured on the outpost's automatic scanners as a T-9 energy converter was heisted by crew members of the starship. Alerted by the theft, the starship USS Enterprise-D was tasked with pursuing the warship by Starfleet. During negotiations with the Ferengi, DaiMon Tarr of the Ferengi claimed this system was in Ferengi territory, a claim dismissed by Captain Jean-Luc Picard of the Enterprise-D. Later, with the persuasion of the Portal, the Ferengi returned the converter to the Federation. (TNG: "The Last Outpost")