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Theta Cygni (13 Cygni) is a star system, a trinary star visible from Earth in the constellation of Cygnus. There were at least twelve planets in the system, at least one of which had borne sapient life. (TOS episode: "Operation -- Annihilate!")

History and specifics[]

At some point between 2067 and 2165, blastoneuron neural parasites infected the population of twelfth planet Theta Cygni XII, causing the inhabitants to go extinct. (TOS episode: "Operation -- Annihilate!")

In 2165 a Tellarite freighter reported receiving a distress call from Theta Cygni XII. Starfleet dispatched the USS Essex to investigate. Captain Bryce Shumar reported to Admiral Jonathan Archer that the Essex had found all life on the planet had been destroyed by chemical and bacteriological warfare some time ago. Shumar informed Archer that as far as the Essex could determine the planet had suffered a wave of mass insanity, and that a number of ships had been launched prior to the destruction of all life on that world. Because Theta Cygni burned hot the crew did not have a reliable means of tracking where the ships had gone due to the interference generated by the star. (ENT - Rise of the Federation novel: Live by the Code)

Appendices[]

Connections[]

Stars, systems and objects of the Cygnus constellation
16 Cygni61 Cygni (Tellar)Alpha Cygni (Deneb)Beta Cygni (Albireo; Cygnia Minor) • Gamma Cygni (Sadr, 37 Cygni)Cygnus systemEpsilon CygniOmega Cygni (MaluriaCygnet) • Theta CygniVeil Nebula
Alpha and Beta Quadrant stars and star systems (T)
TabukTagusTajarhiTakanTakanarraTakoiTalgatTaliTalinTalithaTallusTalnaTaloraTalquosTamarosTanarisTaniaTandorianTantalusTaojiTaosTaranTarettTarfTariaxTaris SetiTarletusTarnakTarquoleseTarsusTartarusTasoxTasusTau BetaTau GammaTau OmegaTaureanTauro-34TautallusTauteeTaxakTaygetaTaziokTaziorT'DakkaTe AwamutuTechnisTejatTekianTekielTelcosusTelumTeluridianTemarisTemaziTemirTenakTenaraTendarTendarriTenekratusTenberTera LaraTeranthTerazon-X31TergaTerminimurusTerratinTerrellianTessmataTesumTevronTewaTezel-OrokoTezionThabitThalakThaliaThallusThark-MorkolTharnosTharsisThasusTheata LeonisThelonii system (Thelonii) • ThetaTheta 116Theta BowlesTheta CobriniTheta CygniTheta GammaTheta MajorisTheta MarianaTheta MeesTheta RillTheta TauThetalianThevosTholusThonolanThorian-VThoris AmarnisThranstorThraxThrazThrellviaThubanTHX-1138TiganTikopaiTiliulTimoniumTimorTimoreTir KapovTirianTirosTitanTitaniasTithadiTizumTlaoliTNC-5527TokanTok'BhulTolochonTolorTomanToolianTorTorgu-VaToronaTortugaToziuzTozoxTragerTraklivTrelkisTri-BetalineTri-Rho NauticaTriaminusTriangelesTriangularisT'RillTrillbyTripoliTruaiTruxtunTseenTsihTsugh KhaidnnTszeTufemTulanTutakai system (Tutakai) • T'VantTyburnTychoTyntTyoloTyraTyrtaeusTyrus Alpha and Beta Quadrant icon image.
Alpha Quadrant stars and systems (T) TagraTalosTama/TamarTammeronTarahongTarazedTarvoTasakTau CetiTau CygnaTau BoötisTaurusTegedaarTellarTemeckliaThalosTherbiaTheta AquariiTheta DraconisTheta PegasiTL-9139TohvunTomedTopinTormanTorrosTrelkaTriangulumTrillTrivasTyl Alpha Quadrant icon image.
Beta Quadrant stars and systems (T) T'acogTalvathTarodTau CentauriTau DeltaTau LacertaeTegmeniTellunTeneebiaTephreiTerixTessenTeutilT'ghaThalassaThallonTheta CentauriTheta EridaniTheta HydraeTheta IndiTheta LeonisTheta PavonisTiburonTigelisTikaT'MetToh'kahtT'ongToredarTorekTornaToronTraelusTranome SarTrilith Beta Quadrant icon image.

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