From Halopedia, the Halo wiki
Pydoryn is a gas giant in the Shaps system.
Pydoryn is primarily blue-colored but also exhibits swirling bands of orange which cast a mauve radiance. Pydoryn is orbited by twelve moons, one of which is Taram. In December of 2553 Taram was the site of a conflict between the United Nations Space Command and the Keepers of the One Freedom, which had established a base there.