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Upsilon Aquarii, also known as Upsilon Aquaris or 59 Aquarii, was a star system in the Alpha Quadrant. (ENT: "Cold Front")

Components

Stellar system

This was a binary system. The primary Upsilon Aquarii A was a F-type dwarf.

Stellar cartography

The Upsilon Aquarii system was visible from Earth in the constellation Aquarius. It was approximately 75 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 3191, the position of this system was labeled on a star chart. (DIS: "Red Directive")

In 3195, the position of Upsilon Aquaris was labeled on a Federation star chart which was used in Starfleet Academy's Temporal Mechanics classroom. (SA: "Beta Test")

In 3196, during the Omega-47 crisis, the location of Upsilon Aquaris 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 the affected region. (SA: "300th Night")

This star system was only mentioned in writing.
Information on this system was derived 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)

External links