Geonosis and the Outer Rim Worlds (2004)

From the back cover:

This sourcebook features:
- Detailed description of 26 planets in the Outer Rim region of the galaxy
- Historical information that spans all three major eras, description of indigenous populations, and key locations for each planet
- Special emphasis on Geonosis and Kamino, including characters and locations introduced in Episode II: Attack of the Clones
- Gamemaster-only sections for each planet with supporting characters, adventure hooks, new creatures, aliens, vehicles, and gear