Phoenix Cluster

The Phoenix Cluster was a region of space containing numerous stars. In 2368, the USS Enterprise (NCC-1701-D) became the first Federation vessel to visit the Phoenix Cluster, on a two-week surveying mission. The mission was interrupted by the proliferation of a Ktarian game on board, part of a Ktarian plot to take over Starfleet. 

Phönix-Schwarm フェニックス星団 Phoenix cluster