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Xi Pegasi, also known as 46 Pegasi or Neethia, was a star system in the Alpha Quadrant.

The Neethian cradlefish was native to this system. (SA: "Vox Sola")

Components

Stellar system

This was a binary star system consisting of the F-type dwarf Xi Pegasi A and the companion red dwarf Xi Pegasi B.

Stellar cartography

The Xi Pegasi system was visible from Earth in the constellation Pegasus. It was approximately 53 light years from Sol.

In the 2150s, this system's position was labeled on an United Earth star chart which was displayed in several crew and guest quarters aboard the Enterprise. (Star Trek: Enterprise, set decoration)

In 3195, the position of Neethia (Xi Pegasi) was labeled on a Federation star chart which was used in Starfleet Academy's Stellar Cartography laboratory. (SA: "Beta Test")

Later that year, this system's position was labeled on a Federation star chart which was displayed on the bridge of the USS Athena. (SA: "Come, Let's Away")

In 3196, during the Omega-47 crisis, the location of Neethia (Xi Pegasi) 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. This system was outside of the barrier. (SA: "300th Night", "Rubincon")

Appendices

Background information

This star system was only mentioned in writing.

Information on this system was derived from the episodes, 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, Star Trek: Lower Decks, and Star Trek: Starfleet Academy. The real-world information added to the article was current as of 2026.

The star chart seen in the series Star Trek: Enterprise made its first appearance in Crewman Daniels quarters in "Cold Front". It was also seen in several other episodes of the series, from 2151 to 2154. (For more information, see Federation star charts#United Earth Alpha/Beta star chart)

According to Star Trek: Star Charts (p. 44) and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), this system was a destination on a Denobulan trade route in the 22nd century.

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