Vendor was a star system located in the space of the Vendor sector in the galaxy's Beta Quadrant, within the borders of the Romulan Star Empire. It was a binary star system. (ST references: Star Trek Maps, Star Charts) The two sources differ on stellar classification. Star Trek Maps states that the primary star is an O or B class star, and that the system has a brightness of absolute magnitude −3. Star Charts, however, states that the primary star is an F class white star and adds an M class red secondary, with a brightness of magnitude +5.