The system's four planets are:
- Endor, also called Tana, a gas giant orbited by the forest moon of Endor. While the planet itself is uninhabited, the moon is home to many different creatures, including the sapient Ewoks.
- Eloggi, a cold world composed of frozen, barren rock.
- Megiddo, terrain composed of barren rock.
- Dor, the outermost planet, with a surface rich in metals.