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Capella IV

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Capella IV
Capella IV Remastered.jpg

The Enterprise orbits Capella IV

Type: Planet
Native Species: Capellans
Capellan flower
Capellan power-cat
Location: Capellan system
Affiliation: Contested between the United Federation of Planets and the Klingon Empire (2267)
Capella IV surface.jpg


The Explored Galaxy

The location of Capella on "The Explored Galaxy" star chart

Capella IV was the inhabited fourth planet of the Capellan system. The planet was located close to the Klingon-Federation border. It was the homeworld of the Capellans, a pre-warp humanoid species, as well as the Capellan flower and the Capellan power-cat.

In the mid-23rd century, Capella IV was valued by both the Federation and the Klingons for its rich deposits of topaline. (TOS: "Friday's Child"; TAS: "How Sharper Than a Serpent's Tooth", "The Counter-Clock Incident")

Leonard McCoy was briefly stationed on Capella IV in the mid-2260s. (TOS: "Friday's Child")

In 2267, the planet served as a pawn in the Federation-Klingon Cold War, during a trade dispute between the Klingons and the Federation over topaline mining rights. The crew of the USS Enterprise was able to secure the rights for the Federation. (TOS: "Friday's Child")

In 2293, the location of Capella in the Milky Way Galaxy was labeled in a star chart that was in Captain James T. Kirk's quarters aboard the USS Enterprise-A. (Star Trek VI: The Undiscovered Country, okudagram)

Background informationEdit

Capella IV is one of the only two planets in The Original Series whose surface was depicted both on location (at Vasquez Rocks) and on Desilu Stage 10.

Capella IV was given a "face lift" for the 2006 remastered version of "Friday's Child", with a digital planet replacing the stock footage from the classic episode.

According to, Capella IV was a M-class world. [1] According to The Worlds of the Federation, the Capellans refer to their world as Kohath.

According to Star Trek: Star Charts (pp. 33, 37, & 47), Capella IV (Alpha Aurigae IV) was located in or near Federation space. Capella IV was ruled by the Ten Tribes of Capella, and was established as a protectorate of the Federation in 2267. The dominant species were the humanoid Capelians. In 2378, there were an estimated 160,000 Capellans living on the planet. A major attraction of the planet was the tomb of Leonard James Akaar.

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