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Eta Coronae Borealis was a star system in the Alpha Quadrant

Components

This was a trinary star system. It was organized into a binary star system with a pair of G-type dwarfs (Eta Coronae Borealis A/Eta Coronae Borealis B) and a single star system, with a sole brown dwarf primary (Eta Coronae Borealis C).

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 Eta Coronae Borealis system was visible from Earth in the constellation Corona Borealis. It was approximately 55 light years from Sol.

In 3191, this system's location was labeled on a star chart. (DIS: "Red Directive")

In 3195, the position of Eta Coronae Borealis 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 Eta Coronae Borealis 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 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, Star Trek: Lower Decks, and Star Trek: Starfleet Academy. The real-world information added to the article was current as of 2026.

External links