Correlia

Correlia was a planet controlled by the sith.

History
Correlia was home to a peaceful race that was destroyed when the sith took control of the planet.

Sith Control
In 48 BBY, Correlia was taken over by the sith and they used it's secret location to attack the Jedi.

Destruction
In 71 ABY Ason Lod destroyed the planet with the Core Buster