The Kapor'At was a star system that was colonized by members of the Klingon Empire, despite the fact that it was claimed by the Romulan Star Empire. Eventually, raids and numerous attacks would be conducted by the Romulans which resulted in the Klingons abandoning the system. Colonies within the system included; Der'Nath. The system was only forty-two light-years from Selva. (TNG novel: War Drums)