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Federation map showing the position of Romii in relation to Romulus and the Romulan Neutral Zone

Romii was a location near the Romulan system and the Romulan Neutral Zone. It was located in Sector Z-6 of the Beta Quadrant.

During the Neutral Zone Incursion of 2266, the location of Romii was labeled on a star chart of Sector Z-6 that was displayed on the bridge viewscreen of the USS Enterprise. (TOS: "Balance of Terror", display graphic)


Background information

This location was only mentioned in writing.

The location of Sigma Nelvana, the primary of the Nelvana system, 2366

This location's quadrant of origin is inferred based on the location of Sigma Nelvana's system, in the vicinity of outposts 3 to 6, as seen in the star charts appearing in the Star Trek: The Next Generation episode "The Defector" and in the Star Trek: Picard episode "Maps and Legends".

According to Star Trek: Star Charts (p. 66, "United Federation of Planets II") and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"; "Position of the Romulan Star Empire"), Romii was the name of a star system. The primary of the Romii system was a K-class star. It was located in the Romulan War Theater of Operations (2156-60). According to a map of the Romulan Empire – prepared by the Stellar Archive Artist Lsel Essik, from the Romulan Master Data Catalog, in 2366 – Romii was identified as a Romulan system.

According to the Star Trek Encyclopedia (4th ed., vol. 2, p. 215) and, Romii was an alternative name for Remus.


According to Star Trek Maps (p. 29), Romii was an early Romulan colony. It was a white subdwarf orbited by four planets, with only the inner planet inhabited, with a population of five billion.

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