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39 Serpentis was a star system in the Alpha Quadrant.

Components

Stellar system

This was a binary star system. The primary 39 Serpentis A was a G-type dwarf. (ENT: "Cold Front")

Stellar cartography

The 39 Serpentis system was visible from Earth in the constellation Serpens. It was approximately 57 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, this system's location was labeled in a star chart. (DIS: "Red Directive")

In 3195, the position of 39 Serpentis 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 39 Serpentis 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 enclosed region. (SA: "300th Night", "Rubincon")

Appendices

Background information

This star system was only mentioned in writing.

The location of this star system was seen on the bridge of the SS Eleos XII on what appears to be an updated chart from Star Trek: Star Charts. Dave Blass published pictures of the set on his website.

Information on this system was derived from the episodes, from the reference works Star Trek: Star Charts and Stellar Cartography: The Starfleet Reference Library, and from 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)

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