Raxus Secundus

Raxus Secundus, also known simply as Raxus, was at one point during the Clone Wars, the capital of the Confederacy of Independent Systems. It was a temperate world with grassy hills and many trees.

History
Raxus Secundus was located in the Raxus system, the same star system as Raxus Prime. The planet was the site of the Separatist Parliament during the Clone Wars and was heavily guarded by a fleet of Separatist frigates and battleships. Separatist Senator Mina Bonteri and her family lived on the world during the conflict close to a spaceport in one of the planet's cities.

Behind the scenes
According to the episode guide for "Heroes on Both Sides," the relationship between Raxus and the pre-existing Raxus Prime has not been specified, though the two planets were clearly designed to be different from one another.

When asked about any future update showing the placement of the planet Raxus compared to Raxus Prime, Atlas author Jason Fry responded that the appendix works on a system-level and he sees no reason why Raxus and Raxus Prime can't be in the same solar system. Fry later made this connection canon with Raxus's entry in the Star Wars: The Clone Wars: Episode Guide.