Buwan

Buwan is the primary natural satellite orbiting the planet Balaho, the Unggoy homeworld, the secondary satellite being Padpad. It is the site of a Covenant hydro-processing center used to refuel and power starships. The facility was abandoned following the splintering of the Covenant, though it continues to operate via automated subsystems.

Trivia
Buwan is the Tagalog word for "moon".

List of appearances

 * Halo 3
 * Bestiarum
 * Halo: Combat Evolved Anniversary (Penance multiplayer map)