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Locator logo showing the galaxy's Alpha and Beta Quadrants.


Sector Sigma-485 was a region of space, a sector in the galaxy's Alpha or Beta Quadrant. Three of its star systems had joined the United Federation of Planets in the 24th century, bringing some stability to the politically fractured area. (TNG novel: Exiles)

History and specifics

Based on Federation surveys, this sector contained 66% fewer habitable planets compared to galactic average. Worlds with sentient life and civilizations gained strategic significance as a result.

By the 2360s decade, the Federation had knowledge of 20 civilizations, of which three had become Federation members. The majority remained non-aligned and jockeyed for power.

Around that time, the region was also plagued by D'aveedi pirates from the neighboring Sector Epsilon-485.

Between 2316 and 2366, these worlds engaged in small wars and at least six short-lived alliances.

In 2356, Alaj became the first world in the region to join the Federation. However, the Alajians proved a reclusive member over the following decade.

Vorgon joined in 2358. (TNG novel: Exiles)

The Vorgons and the Shirna would be involved in conflicts that involved the Temporal Cold War and lasted into the 27th century. (DTI novel: Watching the Clock)

Ta'Trosha IV, homeworld of the sociable Ta'Troshans, was the final planet to join, in 2361.

In the year 2366, impending ecological collapse on Alaj and Etolos forced the Federation to negotiate a settlement between the belligerent parties. The Alajians were an offshoot of the Etolosans. Starfleet dispatched the USS Enterprise-D. Operations manager Lieutenant Commander Data performed the briefing on this sector for the senior staff. (TNG novel: Exiles)

Native species




Sector Sigma-485
Alajian system (Alaj) • Etolosan system (EtolosAnarra) • Gamma BreegGamma NorikKejor system (Kejor VI) • Ra'Trosha system (Ta'Trosha IV) • Vorgonsee also: Sector Epsilon-485
sectors of the galaxy
sector blocks and their major sectors Alpha Centauri (TeneebiaSierraVendor) • Alpha Trianguli (AlgiraAlmathaDorvan) • Beta Ursae (BajorCardassiaKalandra) • Eta EridaniGamma OrionisIota PavonisOmega Leonis‎OrelliusPi CanisPsi VelorumRegulusSirius‎Tau Dewa‎TekaraVyntadiZeta Andromedae Galaxy diagram image.
other named sectors AjmanAkiganelAldebaranAllicarAlpha 19Alpha CentauriAlsuranAncharAndorAnsterraAntaresAntedianArchimedesArawathArgosianArgusAriasBellatrixBelotiBeneciaBeta NiobeBeTauB'MothBolarusBoswelliaCabralCambornCampanCanopisCarrayaCelesCicadaDalmineDashaDelta VegaDenobulanDevronEerina VEliasEpsilon IXEpsilon QuinonezEpsilon Z-3Epsilon-485FoxtrotFries-PosnikoffG-5G17GallowayGameraGamma HydraGamma TrianguliGandGarimanGavariaGlesseneGlintaraGouramiGrewlerGuravaH-100HekarasHorusHromiHyralanIgoJaradanKalebKandariKavis AlphaKavrotLaganaLan'TuanaLeughonLidaraMagellanMalfabricanMarkomenMarkoniaMariotianMarrabMaxiaMekordaMinaraMoabMobiaMoranMurasakiOmegaOmicalOneamisuOphiucusParveniumPerseusPodarisProcyonQav'loSQuebecRakhariRedRegulusReydovanRhomboid Dronegar 006Rhymus MajorRomeoRukaniRutharianSamnarSargassoScyllaSelaySelcundi DremaSigma DraconisSigma-485SikarianSilarianSolTakaraTalarTangoTarodTauganTellarTerra NovaThanatosTharkianThetaTiberTintagelTrexelian 001Trexelian 002Trexelian 003Trexelian 004Trexelian 005Trexelian 006Trexelian 007Trexelian 008Trexelian 009Trexelian 010Trexelian 011TriangleTrillTyphonUmaniVandenVaskanVegaVega 6Vega-OmicronVenturiusVestaVrungVulcanV'varianWinduWodenWumparXarantineYontasaYurokZed LapisZhirrZ-6Zytchin
numbered sectors 00100200300400500600700800901012-J14C16C01818J01921C02323-D23-H02427F02829G030031032034038038G39J040047B054054R061063068H078079F90.4097108109G116T119D130134142145179204E213219A220B220A221-G221-H262275283396401418D4414-70492500507743-D861875902949104511561385150916071608160921582520355636413658442319658211662118521290213052139621399214592150321505215272153821602218032183421835219472203622055220932213922309223582240225712227572284622849228532285822956230792309425013367643762841751417524175364238

See also

  • Sector Epsilon-485