The Peliar system was an inhabited star system. An inhabited planet, Peliar Zel II, was the homeworld for a native species. In the 19th century, this species had colonized the two moons, Alpha moon and Beta moon, of Peliar Zel II. (TNG: "The Host")

According to Star Trek: Star Charts ("United Federation of Planets III") and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Peliar Zel system was located in the Alpha Quadrant. The system's primary was a K-class star.
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