Eminiar

From Memory Alpha, the free Star Trek reference

Eminiar is a star located in or near Federation space, primary of the Eminiar system. (TOS: "A Taste of Armageddon"; TNG: "Conspiracy")

Eminiar was mentioned only as a small note on a very large star chart graphic created for TNG: "Conspiracy". It was the image behind the chair in the room where Dexter Remmick was killed. It appears to be located within an outlined block, which may indicate that it was surrounded or was even a part of Federation territory at the time. In TNG: "Yesterday's Enterprise", Eminiar was also listed, in an alternate timeline, in a tactical situation monitor showing progress of the Klingons in their war with the Federation. The star was actually listed twice in the display.