Eminiar VII

From Memory Alpha, the free Star Trek reference.

Eminiar VII is the seventh planet in the Eminiar system, and was the home of Eminian Union, the principal civilization of the star cluster NGC 321. Eminiar fought a war with the third planet in the system, Vendikar, that lasted for five hundred years before Kirk put a stop to it in 2267. The civilization was advanced, having had space flight for several hundred years, but it had elected not to venture off of the homeworld. Legitimate targets in the war included vessels orbiting the planet, a fact that caused Kirk considerable difficulty during his visit. (TOS: "A Taste of Armageddon")

A view of the surface of Eminiar VII was depicted on several viewscreens on Deep Space 9's promenade and replimat (DS9: "The Muse") advertising a trip to the "scenic Eminiar VII". (DS9: "What You Leave Behind")