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Memory Beta, non-canon Star Trek Wiki

Thieurrull (translated from Rihannsu as "Hellguard" and also known as 872 Trianguli V) was a planet located in the space of the galaxy's Beta Quadrants, the fifth planet in orbit of the 872 Trianguli star system. Thieurrull was once a Romulan world, a failed colony planet located in the Romulan Neutral Zone. Hellguard was hastily and incompletely evacuated after the "Second Federation Encroachment", and was the birthplace of Saavik. (TOS novel: The Pandora Principle; TOS - Rihannsu novel: The Romulan Way; ST novel: Vulcan's Heart)

In an alternate timeline with similar events, Saavik and a group of other children lived a feral existence on this planet before their discovery by Sarek. (ST - Myriad Universes novel: The Chimes at Midnight)


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Romulan planets and planetoids
83 Leonis B V872 Trianguli VAbraxas VAbraxas IXAbraxas PrimeAchernar IIAchernar PrimeAcrux IXAin IAlcyone IIAlgeron IIIArachnaeArtaleirhAssaf GolavAtrius VAvior VIIIB'Lev IBardatBestari XBrozBrutus XBu'Uli Tev IIICeles IIChalChaltok IVChara XCheronChetzia IIIChulConstanthusCor Caroli IXCor Caroli VCortCorvus VIIICrateris colonyDevoras planetDidacti IVDiWahnD'ravasasz IVDrovna IIIElohGarthosGasko IIGemma VIIGibraltarGirgaGlintara IGotanna IIIHellguardIzar IVKalabestaszKallionKarrKe Kwanus VKevratasKhazara planetLevaeri VMakarMireMelik VMira Maj VIMirhassaNequencia colonyNew RomulusNimbus IIIPersevus IIIPilum IVPlacidus IIPrimus IVRalatakRator IIIRator IVRemusRhei'llhneRomiiRomulusRotronSadallSadat VISalaHSandal IVSantora PrimeScheat IIIScutulum IIISeginus IISheratan VIISithoiSitula ITalvath colonyTartalusTerix IIThieurrullUnroth IIIVirinatXanitlaZaxx'n VIZevarus Prime Romulan Empire emblem image.
planets visited by the USS Enterprise (NCC-1701) (2273-2285)
James T. Kirk's second five-year mission (2273 - 2278)
2273 EarthNelestraLorinaEarthStarbase 16 planetYannid VIAndrea IVCalibus VIIEarthManliktGrokhShadirToltan MoonForma VIAgena IVTarsus IITelosAbarisMycenaStarbase 8 planetBarak VIICragon VSycoraxAndronicusStarbase 28 planet
2274 MestikoHus-24SarsithiaVulpecula 12 IVIskoniaHamal IV (Starbase 18) • MimitEarthThoris Amarnis IVZeta-AtezArgus IVCytheriusPhaetonHephaestusZeta Reticuli IIStarbase 9 planetMiaplacidus VValerianGoran IVNordstralHelvaZaran II
2275 EarthFlyspeckVulcanFeeniks-Denn IVNova EmpyreaYkoMiri's homeworldPerinda IVOblik IIIGarrus
2276 Sigma 1212Zenna IVDuran XIIParides IVLevaeri VArtaleirh
2277 Manark VMurakami IXLycos VVarda IIIMyraKhepriPollox IVUpsilon Xi IIILieberman's WorldMacedon IIIMarris VOmicron Theta VAyin Aleph IIILam Qaf Kha IIKappa Rho IV
2278 CathyGranotoulomines planetHippocrates IVDekkanarAkkallaEarthBelle Terre
Spock's command (2278 - 2285) MestikoEarthFortenueCirce VIThieurrullStarbase 12RegulaEarthHellguardEarthDelta IVRatorYkoMestikoEarth
Admiral Kirk's command (2285) EarthRegula IGenesis PlanetAzphariOrganiaBeta Epsilon VIBabelVulcanRomulan planetoidEarthGenesis Planet