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Epsilon Eridani (also known as Delta Orcus and Toredar) is a star, an orange star that is visible from Earth in the Eridanus constellation, some 10.5 light-years distant. This star system contains the planet Axanar, and is located in the general vicinity of 61 Ursae Majoris, Sirius and the Tau Ceti system. (ST reference: Star Charts)

SystemEdit

AppendicesEdit

ConnectionsEdit

Stars, systems and objects of the Eridanus constellation
1 Eridani (Tau-1 Eridani)3 Eridani (Azha, Eta Eridani)13 Eridani (Zibal, Zeta Eridani)14 Eridani18 Eridani (Delta Orcus, Toredar, Epsilon Eridani)23 Eridani (Rana, Delta Eridani)34 Eridani (Gamma Eridani, Zaurak)38 Eridani (Beid, Omicron-1 Eridani)40 Eridani (Keid, Omicron-2 Eridani, Vulcanis)59 Eridani67 Eridani (Cursa, Beta Eridani)82 Eridani88 Eridani198 EridaniAlpha Eridani (Achernar)Beta Eridani (Cursa, 67 Eridani)Chi Eridani (Caleb, Kaleb)Delta Eridani (Rana, 23 Eridani)Epsilon Eridani (Delta Orcus, Toredar, 18 Eridani)Eta Eridani (Azha, 3 Eridani)Gamma Eridani (34 Eridani, Zaurak)Iota EridaniOmicron-1 Eridani (Beid, 38 Eridani)Omicron-2 Eridani (Keid, 40 Eridani, Vulcanis)p EridaniTau-1 Eridani (1 Eridani)Tau Eridani CloudTheta Eridani (Acamar)Zaurak (34 Eridani, Gamma Eridani)Zeta Eridani (Zibal, 13 Eridani)
Klingon stars and star systems
11 Hydrae14 Cancri14 Leonis15 Leporis15 Lyncis16 Cancri18 Eridani2 Corvi22 Hydrae24 Geminorum27 Geminorum26 Monocerotis3 Coronae Borealis38 Lyncis42 Boötis43 Andromedae48 Aquarii54 Geminorum57 Andromedae (Alam'ak, Behr'ak, Czar'ak) • 59 Eridani6 Delphini67 Eridani7 Aurigae75 Geminorum8 Aurigae8 MonocerotisAaladAberrizAgenaAgiirratAiligAlam'ak (Alam'ak, Behr'ak, Czar'ak) • AlhenaAlmachAlpha MonocerotisAltanis IdrilonAmarAquilaArchanisArdanArktoAxanarAxelotAzragaBaldukBehr'akBeta AndromedaeBeta BoötisBeta CentauriBeta Coronae BorealisBeta DelphiniBeta EridaniBeta LankalBeta PentheBeta ThoridorB'MothBorethBortasBrestantBurukCambraCernenCerzomCossinaChu'DeghCursaCzar'akDa'KelDayosDellerenDelta CyannaDelta KhinahDelta LeporisDhum'QhaDhu'QuaDelta OrcusDoltecDon'zaliDoralaDorlaElkauronEpsilon AurigaeEpsilon CorviEpsilon EridaniEpsilon GeminorumEpsilon HydraeEpsilon MonocerotisEpsilonEta SerpentisFev'TokFGC-24187ForcasFuh'RhudGaldonterreGamma Andromedae (Alam'ak, Behr'ak, Czar'ak) • Gamma AquariiGamma EridonGamma GeminorumGanaldaGanarraGhombaGilaGorathGrafGr'othHadarHaleeHamalzH'atoriaHegh'taHor-chaHrakkourIkaalIkaliaIota GeminorumKachtullaKa"hatKahlessKandruKannonKanthKanthuKaphKaplhaadKapor'AtKappa GeminorumKarhammurKarregheniKathraKavrot javmaH javKedgellanKhashahKhitomerKinkuthanzaKintirK'KorranKlach D'Kel BrachtK'lai KlinzhaiKlamuthKlathindKlevasKlinzhai (K'lai Klinzhai) • KlorgatKlothosKohlKolothosKoranischatKorinarKorregKorvadKorvusKrazKrellKrios systemKrychekK'TazzaK'thar (K'lai Klinzhai) • K't'ingaK'TinnamKumarKuraK'VortLaktarLambda GeminorumLandauLanderrabbLaurentianLazarraLoskiLothosMaazMaht-H'aMakrechaMarangaMarcanMarramMazurM'CharMebsutaMempaMinkarMirachMorskaMrangMuldorMunjebNarendraN'derialNegh'varNekkarNereitNimbusNo'MatNusakanOgatOmega-2 CygniOmicron LeonisOnzaPaghPalgrenaxPenchanPhadPhaedusPhebenPhillo'tokPleth'raPlyranaP'rangPsi CancriPuriazQaitosQo'noS (K'lai Klinzhai) • Q'TahlQua'Khanqul TuqQurelletQu'VatRaiRaknalRhota'NevRibeldaliaRotanevRotarranRuchbaSadachbiaSadatoniSanurnaSelta AvastamShahkurSifSigma GeminorumSigma KinnaSinnawa LotosSomrawSoranT'acogTarazedTarfTariaxTau LacertaeT'DakkaTegmeniT'ghaTheta HydraeTikaToh'kahtTok'BhulTomanT'ongToredarTornaToronTozoxTraelusVenatorVeneradtVerianneVilliamVor'chaVornVor'nakVuriexWozXolXuxiazYa'vangYeradY'temYullumZemicaZeta AurigaeZeta CancriZeta Pictoris Klingon Empire
Alpha and Beta Quadrant stars and star systems (D)
DaffodonDagemDantarDanulaDaranDarosDaxuraDD TauriDelanosDelosDelta (Delta Principius/Delta Triciatu)Delta ArietisDelta ArlanaDelta CassiopeiaeDelta DariusDelta FuegoDelta IndusDelta NeezottDelta Principius/Delta TriciatuDelta VegaDemeterDeneb KaitosDenkirDenocetDenroDetriaDevidianDevonaDextera 273Dhum'QhaDhu'QuaDidactiDigifalDilyutDinarDizokDonovan's StarDoonaDoralaDouruineDragoDrakenDramiaDraxis IIDrexler Alphabetasym
Alpha Quadrant stars and systems (D) DavonDelaviDelkarDelta AquilaeDelta AurigaeDelta HerculisDelta Pegasi (Delta Pegasi ADelta Pegasi B) • Delta Ursae MajorisDenabDenebDeneb el OkabDeneb KaitosDenobula TriaxaDnocesDoltecDopteriaDorvanDraco MinoraDraco Omega 371Draco UrsulaDraygoDraylonDreonDubhe AlphaQuadrant
Beta Quadrant stars and systems (D) D'deridexDa'KelDasha VertaDavlosDayosDelta CanarisDelta CorviDelta DoradoDelta EridaniDelta GammaDelta GeminorumDelta HydriDelta LeonisDelta LeporisDelta OrcusDelta PavonisDelta PhoenicisDelta RanaDelta VelorumDenevaDerexDesotrianaDevolinDevorasDevorrenDevronDewaDinasiaD'KorinDonatuDrovnaDumok'azen BetaQuadrant
Alpha and Beta Quadrant stars and star systems (E)
EdrisEkinusEl AdrelElbaElkauronEllison's StarElohimElysia IncendaeEmilaEminiarEndicorEnochEntrunarEpsilon 119Epsilon CetiEpsilon DeltaEpsilon IonisEpsilon KitajEpsilon MinoraEpsilon MirandaEpsilon SoronaEpsilon TauriEpsilon ThetaEpsilon Ursae MajorisEpsionEquessErcolaEremarErgolEsablEskiisEta SeratornEta TauriEta Trianguli Alphabetasym
Alpha Quadrant stars and systems (E) EdasichEl NathElasi PrimeEltaninEnnarEnteliorEpsilon AurigaeEpsilon BoötisEpsilon CygniEpsilon DraconisEpsilon OphiuchiEpsilon SerpentisEta CassiopeiaeEta Coronae BorealisEta DraconisEta OphiuchiEta SerpentisEta Ursae MajorisEye of Ket-Cheleb AlphaQuadrant
Beta Quadrant stars and systems (E) EdinovEisnEjul ThelniEpsilonEpsilon CanarisEpsilon Canis MajorisEpsilon CarinaeEpsilon CorviEpsilon EridaniEpsilon GeminorumEpsilon GruisEpsilon HydraeEpsilon Indi (Andoria) • Epsilon LibraeEpsilon MonocerotisEpsilon OrionisEpsilon PavonisEpsilon PhoenicisEpsilon ScorpiiEta AntliaeEta CorviEta CrucisEta EridaniEta HorologiiEta IndiEta LupiEta ScorpiiEye of Grun BetaQuadrant
Alpha and Beta Quadrant stars and star systems (T)
TabukTagusTajarhiTakanTakanarraTakoiTalgatTaliTalinTalithaTallusTalnaTalquosTamarosTanarisTaniaTantalusTaosTarazedTarettTarfTariaxTaris SetiTarletusTarnakTarquoleseTarsusTartarusTasusTau BetaTau GammaTaureanTautallusTauteeTaygetaT'DakkaTe AwamutuTechnisTejatTelcosusTeluridianTemarisTemaziTemirTenaraTendarTendarriTenekratusTenberTergaTerratinTerrellianTessmataTevronTewaTezel-OrokoThabitThalakThaliaTharnosTharsisThasusTheata LeonisThelonii system (Thelonii) • TherbiaThetaTheta 116Theta BowlesTheta CygniTheta GammaTheta HydraeTheta MajorisTheta MarianaTheta MeesTheta RillTheta TauThevosTholusThorian-VThranstorThraxThrazThubanTHX-1138TikopaiTimoniumTir KapovTirosTitanTitaniasTithadiTlaoliTNC-5527TohvunTok'BhulTolochonTomanToolianTorTorgu-VaTornaToronaTortugaTozoxTragerTraklivTrelkisTri-BetalineTri-Rho NauticaTriaminusTriangelesTriangularisT'RillTrillbyTripoliTruxtunTseenTsihTsugh KhaidnnTszeTulanTutakai system (Tutakai) • T'VantTyburnTychoTyoloTyraTyrtaeusTyrus Alphabetasym
Alpha Quadrant stars and systems (T) TagraTalosTama/TamarTammeronTarahongTarvoTasakTau CetiTau CygnaTau BoötisTegedaarTemeckliaThalosTherbiaTheta DraconisTheta PegasiTL-9139TomedTopinTormanTorrosTrelkaTrillTrivasTyl AlphaQuadrant
Beta Quadrant stars and systems (T) TalvathTarodTau CentauriTau DeltaTau LacertaeTegmeniTellunTeneebiaTerixTessenTeutilThalassaTheta CentauriTheta CobriniTheta EridaniTheta IndiTheta PavonisTiburonTigelisT'MetToredarTorekTraelusTranome SarTrilith BetaQuadrant

BackgroundEdit

Epsilon Eridani was identified as Vulcan's star in the reference book Spaceflight Chronology, as well as in the TOS novel: Strangers from the Sky. However, in 1991, Gene Roddenberry along with three astrophysicists determined 40 Eridani A (first suggested as the Vulcan sun by James Blish in Star Trek 2) was the more likely candidate. This has subsequently been reinforced in other novels, and canonically in the ENT episode: "Home".

Real-life astronomy currently has determined Epsilon Eridani to be a singular star with a large gas giant planet, but Star Charts shows the location as a binary star, although some binaries listed in Star Trek publications use that description for systems with stellar-sized gas giant companions instead of additional stars. FASA RPG module: The Four Years War provided Axanar the alternate system name Delta Orcus and called this a K0 type orange dwarf, another slight difference from real-life observations.

In the name "Delta Orcus", the stellar notation using the Greek language letter "delta" indicates that there might be a star group or constellation of some sort named "Orcus", of which Delta Orcus would logically be indicated to be the fourth most prominent star or system.

In TNG video game: Birth of the Federation, the orbital configuration of the game map star systems was randomly generated each time a new game started.

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