Gamma Eridon

Gamma Eridon is a star in Klingon space, located between the Klingon-Romulan border and the inner worlds of the Klingon Empire.

In 2368, the armada under the command of Captain Jean-Luc Picard and the USS Enterprise (NCC-1701-D) retreated to Gamma Eridon after the collapse of their tachyon detection grid. This retreat was eventually unnecessary when the USS Sutherland (NCC-72015) under the command of Data detected the Romulan fleet using high yield torpedoes. 

In 2376, the Gamma Eridon system was infested by Borg forces; Chancellor Martok launched an assault to reclaim the system. 

Gamma Eridon was one of the systems pictured in a star chart displayed by Data aboard the USS Enterprise (NCC-1701-E) in 2379 when they were searching for possible destinations of the missing Emperor Kahless.