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Zeta Herculis, also known as Inferna or 40 Herculis, was a star system in the Alpha Quadrant. (ENT: "Cold Front")

Components

Stellar system

This was a binary star system consisting of the F-type subgiant Zeta Herculis A and the G-type dwarf Zeta Herculis B.

Planetary system

In the system, there was the Federation world Inferna Prime. (PIC: "Maps and Legends")

History

When the Venari Ral laid Omega-47 mines around the core of Federation space in 3196, this system was within the blast radius of one of the mines. (SA: "300th Night", "Rubincon")

Stellar cartography

The Zeta Herculis system was visible from Earth in the constellation Hercules. It was approximately 35 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 Inferna (Zeta Herculis) was labeled on a Federation star chart which was used in Starfleet Academy's Temporal Mechanics classroom. Systems affiliated with the Federation, including this one, had blue labels. (SA: "Beta Test")

In 3196, during the Omega-47 crisis, the location of Inferna (Zeta Herculis) 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: "300th Night", "Rubincon")

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