Gamma Eridon

From Memory Alpha, the free Star Trek reference.

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

In 2368, Jean-Luc Picard's blockade armada retreated to this location to regroup, following the disabling of their tachyon detection grid, seeking to establish a new grid. However, this proved unnecessary as the USS Sutherland detected the Romulan forces by another method. (TNG: "Redemption II")

In the game Star Trek: Armada, the Gamma Eridon system is infested by the Borg, and Chancellor Martok launches an attack to destroy all forces in the system.