Chumeria
From Tardis Wiki, the free Doctor Who reference
Chumeria, also known as "the garden planet of the universe", was the homeworld of the Chimerons. It was located somewhere outside of the Mutter's Spiral, (PROSE: Delta and the Bannermen) relatively near to Toll port G715 and presumably close to the brood planet.
At some point after 1959, Chumeria was attacked by the Bannermen and all Chimerons except their queen, Delta, were destroyed. The planet was left barren and rocky. (TV: Delta and the Bannermen)
