Persei is the second planet from the sun of the Rhetor system, United Empire of Earth (UEE). Persei is home to many research public and private research institutions, most notably the University of Persei Analytical Research and Quantification (UPARQ) center.
Soon after the system was discovered in SEY 2287, surveyors identified vast deposits of rare elements in the crust. The United Nations of Earth (UNE) government used profits from selling the mining rights on Persei to fund the terraformation of Reisee (Rhetor III) and Mentor (Rhetor IV). Land not used for mining was set aside for the state-run University of Persei.