Which fictional gas giant does Pandora orbit in James Cameron’s Avatar?

In James Cameron’s Avatar, Pandora orbits the fictional gas giant Polyphemus.

Polyphemus is a massive planet in the Alpha Centauri system, and Pandora is one of its moons. The film’s setting uses this arrangement to create an alien environment with unusual skies, dramatic planetary views, and a distinct astronomical identity beyond the moon’s forests and mountains.

Pandora’s orbiting planet is named after Polyphemus, the one-eyed giant from Greek mythology. That naming choice fits Avatar’s broader use of classical mythological names, including Pandora itself and the star-system setting.

The name is easy to confuse with Pandora because both refer to major parts of the film’s setting. Pandora is the moon where the action occurs; Polyphemus is the gas giant that the moon orbits.