For other uses, see Capella.

Capella IV (also known as Ceres or Alpha Aurigae IV) is a class M planet, the fourth planet in the Alpha Aurigae star system, governed by the Ten Tribes of Capella and is home to the Capellan civilization. (ST reference: Star Charts)


Because of Capella IV's strategic location along the Klingon-Federation border, both sides have made visits to the planet. After the Federation's first contact, Starfleet Medical sent a medical relief mission to the planet that ended around 2265. Doctor Leonard McCoy considered the mission to be a failure, and confessed that he did not enjoy his time there. (TOS episode: "Friday's Child", TOS novel: Enterprise)

In 2267, Teer Akaar was killed by his rival Maab with Klingon help. However, it was with the effort of Captain James T. Kirk and the crew of the USS Enterprise that the Klingons plan to subvert the planet failed. Shortly after departing the system, the Enterprise was recalled to repel full Klingon invasion. Not satisfied with defeat, the local Klingon commander resolved to take the planet by force. However, Kirk employed a third of the Enterprise's crew in a violent ground battle on the planet's surface and successfully held off the Klingon ground forces for a time. Ultimately, the battle was halted on orders from Klingon General Kellen, who had come to Capella to seek Kirk's aid in averting an invasion by an unknown alien force. In order to secure Kirk's cooperation, Kellen freely ceded Capella to the Federation and agreed to work toward a lasting peace treaty between the Federation and the Klingon Empire. (TOS novel: First Strike)

That same year Capella became a Federation protectorate. (ST reference: Star Charts)

Following the Teer's death, rule of the Ten Tribes fell onto Akaar's infant son, Leonard James Akaar. Akaar's widow Eleen ruled as regent until their son came of age. (TOS episode: "Friday's Child"; TOS novel: First Strike)

In 2272, a coup engineered by a man named Keel forced the young ruler and his mother into off-world exile. Despite their exile, Eleen financed the construction of the huge monument known as the Tomb of Leonard James Akaar (Built while he was still alive, in accordance with Capellan tradition) on Capella IV, in order to let everyone know who had the rightful claim on the planetary throne. (ST - The Lost Era novel: The Sundered, DS9 - Mission Gamma novels: Twilight, Cathedral, DS9 - Worlds of Star Trek: Deep Space Nine novel: Trill: Unjoined)

In 2371, a Ferengi friend of Nog's claimed to have authentic, quality weapons from Capella IV. (DS9 comic: "The Rules of Diplomacy")

In 2376, Admiral Akaar told General Lenaris Holem about living on Capella. (DS9 - Mission Gamma novel: Lesser Evil)

By the year 2380, the 113 year old Leonard James Akaar, who by this time was serving as an Admiral in Starfleet, still lived in exile from his throne and birthworld. (ST novel: Articles of the Federation)

In 2380, Capella had a population of about 160,000. (ST reference: Star Charts)


the planet Capella IV
cities and settlements Akaar (city)AkanChaanGarasHeruthKrelonLantar (city)Maab (city)MoranRaal (city)TolaanZogal
landmarks and institutions Capella IV Climatology OutpostCapella IV Federation EmbassyCapella IV Klingon EmbassyCapella IV Polar Outpost
geography Chalteer MountainsDesertwell MountainsDesert of SorebGoraan MountainsRanaal BadlandsTogrea MountainsVako Highlands
bodies of water Ashira SeaGreshor SeaZanr Sea



Capella IV first appeared in TOS episode: "Friday's Child", named according to planetary notation as the fourth planet in the Capella system, a real-life astronomical location. The Star Trek 3 novelization by James Blish used the name planet Ceres that was an original part of the episode script, noting that the planet was named after the asteroid Ceres in the Sol system, and that the inhabitants were thought to be descended from the remains of a "centuries old" Human colony. The TOS reference: The Worlds of the Federation by Shane Johnson clarified that Capella IV was indeed in the real life Alpha Aurigae system, and that the Ceres name was thought to have been derived from the USS Ceres starship lost in the vicinity.


planets visited by the USS Enterprise (NCC-1701) during Captain Kirk's initial five-year mission (2265-2270)
various Aprilia IIICaporyGarrus
2265 EarthDraxis IITallyAlpha Ortelina VIIArronus VIIAldebaran IIIM-155MestikoDimorusTendarArchernar IVDelta Vega IMiri's homeworldStarbase 127348-IIrobot planetTimshelK-GZartaMetamorphaNumero UnoMortiInicrustVoodoo planetGamma Alpha VStarbase 8 planetPollux IIDukarNeesanAlgenib II
2266 Beta IVRigel XIIPsi 2000Tlaoli IVAlpha Proxima IIAngiraBeta CarinaeExo III1324-IVCanaraNadorM-113Alfa 177Planet QBeneciaYkoTheta VII (Rell's world)Talos IVNumero UnoGateway
2267 Makus IIIBeta VIJanus VIOmicron Ceti IIIDenevaCeti Alpha VEminiar VIIBabelGamma Canaris 527Taurus IIHydra Epsilon IIIXimega IIPerseus Arm planetoidYkoSalvumGrotusRifas-LAmusement Park planetHeitius VIICentaurus VTyrtaeus IIGothosCestus IIINisusIron-silica planetZutotanium planetoidMuddEarthCanaraBeta IIIPyris VIIVulcanGamma XaridianPollux IVArgelius IIHalkaBavaryaNeolithiaMythraCapella IVGamma 400Magna RomaGamma Trianguli VISigma Iotia IIMasabaLekythosTyrtaeus IIShroud IVTycho IVDonico IIRimilliaOrgania
2268 Narnel's WorldNeuralAlpha Malurian VIBeta Canzadia IIIFornax IIGamma IITriskelionArgus XTycho IVTheta VIISigni BetaEarthPegasus IVCareta VDireidiEeiauoPatria IExo IIIT'nufoTranquility VIILeora IVAcademyDelta Canaris IVTautee star systemAmmdonMarcos XIIOctavius IVBeta CabriniAmerindBeta XII-AElasTroyiusSigma Draconis VIEkosScalosGideonBrellian IVPrastorDistrel
2269 MercanAnomalyEdenHolberg 917GSarpeidonExcalbiaAndrosPollux VAvalonCamus IIAragosTanisAleph PrimeKyrosBeta CastelliHeloxUnnamed Hoshan planetsChrellkan IIIChrellkan IVVidenDengella IIAlnath IISanctuaryMemory PrimeEphrata IVGelladorn/R-775 IVelat Nol/R-836 IITheta Tau VTalin IVAleph IIIBoaco VITrefolgMantillesMerak IIArdanaBabelOrganiaGatewayMaltos IV
2270 Isitra ZeroGatewayMercanDenebiaPhylos IIBeta Omicron Delta IIIMotherlodeMegas-TuTerratinSherman's PlanetArgoVedala asteroidDramia IIArretLactra VIIDelta Theta IIIArchernar IVCenotaphTaygeta VOkeanosElcidar Beta IIIYoondriAleriadAritaniYalboSycoraxTalos IVPillagra/R-855 IIIR-855EarthStarbase 12Tomarii

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