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- You may be looking for the 23rd century Starfleet scientist Mira Romaine.
The location of Omicron Ceti on a tactical situation monitor
Mira (or Omicron Ceti) was the primary of the Mira planetary system. There was an inhabited planet, Omicron Ceti III, in this system. This planet was the location for a Federation colony in the 24th century. The system was located in the Alpha Quadrant. (TOS: "This Side of Paradise"; TNG: "Eye of the Beholder")
In 2367, Mira (Omicron Ceti) appeared on a chart in Captain Benjamin Maxwell's ready room on the USS Phoenix. (TNG: "The Wounded", display graphic)
In an alternate 2366, Omicron Ceti was marked on a tactical situation monitor showing the fleet deployments in the Federation-Klingon War. (TNG: "Yesterday's Enterprise" display graphic)
Background information
The connection between Mira and Omicron Ceti had not been established on screen. It was based on real world information and reference material. According to Star Trek: Star Charts (pg. 37), Mira (Omicron Ceti) was a Federation system in the late 24th century. This system was located in the Alpha Quadrant. The episode "This Side of Paradise", and the tactical situation monitor in "Yesterday's Enterprise", and "The Wounded" referred to this star as Omicron Ceti.
The star was depicted twice in the display. The tactical situation map depicted an area of space in the Alpha Quadrant. The locations Eminiar, Janus VI, Rigel, Andor, Babel, and Delta Vega were identified on "The Explored Galaxy" wall chart as being located in this quadrant.
The name Mira was also used for another system, the Mira Antlia system in "Conspiracy".
It also very likely that Mira and Omicron Ceti are two different stars in the Star Trek universe as Mira in the real world is a variable star that has extreme changes in brightness thus making any planet in orbit around it extremely unlikely to be a site of a agricultural colony.