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The Preenos system, also known as Rho Geminorum, was an inhabited planetary system in the Alpha Quadrant.

Components

This was a trinary star system consisting of the stars Rho Geminorum A, Rho Geminorum B, and Rho Geminorum E.

This sytem contained the planet Preenos, which was the point of origin for the spice hajjlaran. (ENT: "Oasis"; SNW: "Strange New Worlds")

History

When the Venari Ral laid Omega-47 mines around the core of Federation space in 3196, this system was within the enclosed region. (SA: "Rubincon")

Stellar cartography

The Preenos system was visible from Earth in the constellation Gemini. It was located approximately 58.9 light years from Sol.

In 2259, the location of this system was labeled on a stellar cartography chart that was seen on the USS Enterprise's ready room viewscreen. This system's symbol had a blue color, indicating that it was affiliated with the United Federation of Planets. (SNW: "Strange New Worlds", "Children of the Comet", "Spock Amok")

The system's location was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters in 2399 and on the bridge of the USS Titan-A in 2401. The Preenos system was in or near to Federation space. (PIC: "Maps and Legends", "The Next Generation", "Disengage")

In 3196, during the Omega-47 crisis, the location of Preenos (Rho Geminorum) was depicted on star charts and readouts used across several locations on the USS Athena to locate, monitor, and respond to the Omega-47 mines laid by the Venari Ral. (SA: "Rubincon")

This star system was only mentioned in writing.
Information on this system was derived from the episodes and films, the reference works Star Trek: Star Charts and Stellar Cartography: The Starfleet Reference Library, and real-world sources. The reference works were used extensively in the creation of star charts seen in Star Trek: Discovery, Star Trek: Picard, Star Trek: Strange New Worlds, Star Trek: Prodigy, and Star Trek: Lower Decks. The real-world information added to the article was current as of 2025.
According to Star Trek: Star Charts (p. 60) and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Preenos system was a trinary system with a trio of F-class stars.

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