Ajilon Prime is a Federation world located in the Ajilon system of the Beta Quadrant, near the Klingon border. It is also in or near the Archanis sector. The Decker Memorial Hospital was located there. (ST reference: Star Trek: Star Charts, ST video game: Starship Creator) It was invaded by the Klingon Empire in early 2373, after the ceasefire ordered by Chancellor Gowron broke down. After the planet was invaded, the personnel sent out a distress call, which Julian Bashir and Jake Sisko responded to.