Platonius was a class M planet, home to the Platonians.

History and specifics[edit | edit source]

Platonius is the fourth planet in the Helios system. (TOS reference: Star Trek Maps, FASA RPG module: The Federation)

Its surface is 75% covered by ocean. Three mountain ranges border its sole continent, which reaches from southern tropics to the northern arctic regions. Its capital city was located near the equator along a sub-tropical coastline reminiscent of Greece.

Deposits of kironide were absorbed by the local plant life. The planet had no indigenous intelligent animal life, only the Platonian colonists. (Decipher RPG module: Worlds)

Worlds reported that it had 0 moons, 1.02 G gravity and 25% land mass. The Federation stated that it had 1 moon, 0.97 G gravity and 50% land mass.

History[edit | edit source]

Circa 100 BCE, Platonius was settled by refugee colonists from Sahndara, who'd previously settled in Greece and come to appreciate the culture and the philosphy of Plato. (TOS episode: "Plato's Stepchildren", Decipher RPG module: Worlds)

In 2268, when the USS Enterprise visited this world, its inhabitants tortured the crew members that beamed down, including Captain James T. Kirk. (TOS episode: "Plato's Stepchildren")

When he was transported downtime from 2270 to 2020 and into Shaun Christopher's body, Kirk hoped Christopher wasn't stuck in the body but powerless because he had learned what that felt like on Platonius and had hated it. (TOS novel: The Rings of Time)

On reference stardate 2/2205.24, the transport USS Zirconian Star noted the theft of a large amount of kironide from Platonius. (FASA RPG module: Star Trek IV Sourcebook Update)

Legacy[edit | edit source]

In 2269, Kirk once dreamed that the palace on Platonius was burning down. (TOS novel: The Three-Minute Universe)

In 2293, Nyota Uhura recalled their imprisonment on Platonius shortly after hearing about Kirk's apparent death aboard the USS Enterprise-B. (TOS - Crucible novel: Provenance of Shadows)

Geography[edit | edit source]

Settlements[edit | edit source]

Appendices[edit | edit source]

Connections[edit | edit source]

Hayre Expanse
Command Post 823CorargH-28365H-54786Hayre BetaHelios system (Platonius) • Shipyard 452 Locator logo showing the galaxy's Alpha and Beta Quadrant.
planets visited by the USS Enterprise (NCC-1701) during Captain Kirk's initial five-year mission (2265-2270)
various Aprilia IIICaporyGarrusRheelTriangularis III
2265 EarthDraxis IITallyGamma Alpha VPollux IIStarbase 8 planetSector Vega 6 planetM-155Archernar IVDimorusMandylion VTendar IVMestikoAlpha Ortelina VIIArronus VIIAldebaran IIIDelta Vega IStarbase 12VelluriusEarthGlobular planetNorusJunkyard planetPalnak's planetSantarNova XIIIZeltokKorakTraveler's homeworldDukarOrthooAlgenib II
2266 Crucial-3VultraRobots' planetAngomaMantis planetNuofoStaiVrexBalant planetZargotColtacRigel XIIAlfa 177M-113Psi 2000Tlaoli IVSkurSelkyeTaragonAlpha 332Ynobe IIEcnalRayloNorigaAlpha Proxima IIKynardiArgylusOminnusEarthK-GSeggorForniaAngiraBeta IINeesanKujalLunaBwujaFayoHerculaEarthKibo/NdoraNrakaAlpha 23-COordonMobitaJodarrQuodarZartaFloe IMetamorphaInicrustMortiTerrellian IIVoodoo planetRiza homeworldMila XaKrugar III remnantQuaraxusArimaMazdaNumero UnoBeta CarinaeExo III1324-IV7348-IITantalus VMiri's homeworldPlanet QBenecia
2267 Taurus IIMakus IIIXimega IIHydra Epsilon IIIPerseus Arm planetoidYkoTenkaraSalvumGrotusVaranu planetYkoTalos IVTektonRifas-LAmusement Park planetHeitius VIICentaurus VFomalhaut VEmben IIICynur IVTyrtaeus IIGothosBeta VITheta VIIRamedes IIICestus IIIAlvaLazarus's planetGalaxy Zekbran planetCygnet XIVEarthCanaraBeta IIIDraqqanaIach'tu PrimeEminiar VIICeti Alpha VGamma 400VartaxDak-AlphaTharkMorkolTimshelOmicron Ceti IIIJanus VI7348-IIChandra IVOrganiaAngrenaYkoEarth Colony IIGatewayEarthDenevaJanvarZentarZettin • "the Frontier" • ModalaLadoGamma XaridianElsinor H-25Starbase 10Beta Mariotia IIIVega IIITondusTekkorCarnakPyris VIIEarthPentam VGamma Canaris NVandros VIINukoleeStyraLurotaOorego IVGiant Brain asteroidOtari IIGatewayIsis IIINot EdenMaaba S'JaCapella IVPollux IVVulcanMestikoNadorTactis IIBeta Nirobi IIPhygma IVOutpost Omega-70Tau Gamma IVM-370Argelius IIMerope IVMalurEulusDonico IIGamma Trianguli VIMasabaLekythosTyrtaeus IIShroud IVHalkaIxtoldeGamma Hydra IVCalydonBelmara IVTuran Tot Narut's planetGamma Canaris NTaunusPlanet 656Beton IIISklurrKarrGraktanPlixesAndriusMuddEarthAneher IIWezonvuNalaingMagna RomaBavaryaNeolithiaMythraRimilliaBabelGamma Canaris NTNC 65813VulcanNisusCertaxNarnel's WorldNGC 667Neural
2268 Fornax IIGamma IITriskelionRudimonArgus XTycho IVCentaurusUsildeTheta VIISigni BetaTautee systemVulcanBeta Canzandia IIIMevinnaSigma Iotia IIXanviaXoxxaInquisitor's planetBeta ReticuliDelta VegaNalogen IVDelta VegaDelta Canaris IVAlnath IIAmmdonArretEkosEeiauoSivaoKahlessOmega IVEarthTheta Kiokis IIElasTroyiusElethiaAlsandKosTau Delta IXAmerindStarbase 14 planetAndru 4/6Tranquility VIIMinos VEarthExo IIIT'nufoMinos VEando 375Wrigley's Pleasure PlanetExo IIITortuga VITaos IVTriacusMarcos XIIWokkle IIICawley IVMakon IIIKalaLowariaDreamers' planetSigma Draconis VIMoauvPomplanceRibol IIMarpapluDireidiMedusaElcidar Beta IIIMinara IIOctavius IVBeta CabriniPegasus IVCareta VBeta XII-APlatoniusIzellEarthScalosM-317Beta Aurigae IIISanoora host planetRhinegeltKalandan outpostBrellian IVPrastorDistrelTttnicktttnorAriannusCheronElba IISanctuaryGideonKolya
2269 Memory AlphaMerak IIArdanaPollux VAvalonBalkos IIINova Atar IIITarnak IIMeta IVVesbiusJanus VIPollux IILeora IVBeta Niobe IIIMygdalus IIIWaasertlaCentaurusRaga's PlanetEdenTheta Tau VHolberg 917GLothorTau Beta IVExcalbiaSarpeidonCamus IIDuwamishEphrata IVSigma Niobe IIGatewayKrasni's FollyVestalanMaltos IVOrganiaKyrosNestaAnomalyAcademyYkoArachnaeBabelEpsilon Delta IVHeartlandMemory PrimeTalin IVWeb of WorldsSyhaar PrimeGatewayMantillesValeriaTaurus IIKinshasaAmusement Park planetMotherlodeMegas-TuTerratinSherman's PlanetVerdaniaThe StrandAarak IIIPhi XIUr homeworldVidenGobi IIIPacificaGralafiLoren VArgoWaycrossDengella IIPerryDelta Gamma IVDetente ITrefolgLloyd Zeta-9Sigma Iotia IIHesperides II'QosCirce VAndoriaTrellisaneBeta CastelliHeloxBoaco VIJuram VVancadiaChyrellkaVeletus VPatria IPelos
2270 Janus VIPhylos IIVedala asteroidDramiaDramia IIArretLactra VIIBoqu IIDelta Theta IIIPandroBriamosYkoBelarius IVVelat Nol/R-836 IIGelladorn/R-775 IDT-262Belarius IVLotora IIICenotaphVehtora IVN'caiMuldoonCoridan IIIAkladiMuddKubanSaraiStarbase 7 planetStella Mudd's planetMuddTaygeta VOkeanosBeta Omicron Delta IIIYoondriGatewayZeta GibraltarAndrosYusubArtemys 314KwettirPolymax VIIIHollow PlanetEarth (alternate)GatewaySycoraxBira IIINjuraOmne's planetVoranRazarMercanAleriadAritaniYalboVulcanUnnamed Hoshan planetsTanisAragosAleph PrimeAleph IIIAntos IVTakoi homeworldEarthDenebiaVeneu IIKlondike VIIsitra ZeroPelosArchernar IVTalos IVPillagra/R-855EarthStarbase 12Tomarii

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