Federation Members

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Article in state of progress. Dates from The Guide take precedence.
Unsettled systems, planets, and other locations that fall under the governance of the United Federation of Planets are not represented here.

Member System Native Species State Joined Status Note
Alpha Centauri Prime Alpha Centauri Centaurian Alpha Centauri Concordium of Planets 2161 full native Centaurians and Human colonists
Andoria Procyon Andorian & Aenar Andorian Empire 2161 full
Earth Sol Human United Earth 2161 full
Tellar Prime 61 Cygni Tellarite United Planets of Tellar 2161 full
Vulcan 40 Eridani Vulcan Confederacy of Vulcan 2161 full
Aaamazzara / Therbia Epsilon Serpentis Aaamazzarite Aaamazzarite Technocracy 2221[1] full[2]
Achrady VII Achrady
Adelphous IV Adelphous Adelphousian population wiped out in the Borg attack of 2381
Adhara III Adhara / Epsilon Canaris Canaran 2319[2]
Adhara IV Adhara / Epsilon Canaris 2319 colony (Earth)
Adoss Gamma Emerata 2161 colony (Vulcan) established 2090[2]
Aerie Xindi Council 2311 colony (New Xindus)
Aesa IX Aesa 2248[2] colony (Vulcan) established 2179[2]
Ajilon Prime Ajilon Ajilon Colonial Government 2292 settled from Earth in 2195; remained independent until joining
Akaali Prime Akaali Akaali Akaali Government became member prior to the 32nd century
Alaj Alajian 2356[3]
Albireo II Albireo / Beta Cygni / Cygnia Minor Albireo Colonial Government 2195 full former Federation colony
Aldebaran IV Aldebaran / Alpha Tarui Aldebaran 2216 full same system as New Aberdeen; indigenous population joined after colonization by Earth
Alesia Prime Alesia Alesian 2327[1]
Algol Beta Persei Algolian Algolian Council 2336[1]
Alonis Alonis 2336[4][5]
Alpha Braga IV Alpha Braga
Alpha Braga VII Alpha Braga
Alpha Brechtia
Alpha Canaris III Alpha Canaris 2163[1]
Alpha Canaris V Alpha Canaris 2163[1] full[1]
Alpha Centauri III / Seldarian Alpha Centauri Alpha Centauri Concordium of Planets 2161 colony (Alpha Centauri Prime) settled 2045
Alpha Kratonii IV Alpha Kratonii 2250[2] colony "planet" name is a placeholder; mining colonies may be planetary or beltside
Alpha Majoris I Alpha Majoris / Dubhe United Earth 2266[2] colony (Earth) founded "in the mid-22nd century, shortly after the founding of the UFP"
Alpha Proxima II Alpha Proxima 2189 full former Federation colony
Alpha Sigma IX Alpha Sigma 2334[2] colony (Federation) site of a Daystrom Institute facility
Alpha Sirius I Sirius / Alpha Canis Majoris United Earth 2217 colony (Earth) established 2217[2]
Alpha Sirius III Sirius / Alpha Canis Majoris 2163 full established 2100[2]; formerly joined (as a colony) in 2161; achieved full membership in the late 23rd century[2]
Alphosa Fabrini Green 2237 former site of a large Orion colony 2 millennia ago
Alrescha III Alrescha / Alpha Piscium the planet is a placeholder name
Alshain IV / Beta Aquilae IV Alshain / Beta Aquilae II Alshain TBD
Altair III Altair / Alpha Aquilae Altairian Altair Quadrant 2176 colony (Altair VI) despite this being the homeworld of the Altairians, it fell into a "colony" relationship with Altair VI once the seat of government moved; see: changing UFP membership status related to Altair VI
Altair IV Altair / Alpha Aquilae Palkeo Est Altair Quadrant 2176 colony (Altair VI) see: changing UFP membership status related to Altair VI
Altair VI Altair / Alpha Aquilae Altair Quadrant 2176[6][2] full withdraws 2239; rejoins as the Altair Quadrant (with Altair III & Altair IV) in 2269
Althos Nakagima 62 Bzzit Khaht 2279
Amber Beta Rigalia Alpha Centauri Concordium of Planets 2217[2] colony (Alpha Centauri Prime)
Amerind / Miramanee Epsilon Beta / FGC-351772 Human 2268 protectorate possible it was discovered & protected prior to 2268
Ana'Siuol Ana'siuolo 2235[4][2]
Andros III Andros Androsian 2358[1]
Angosia III Angosia Angosian 2371[2] had to be a number of years after 2366 (TNG: "The Hunted"), but by 2378
Anarra 2356 colony (Alaj) settled by former Etolosans exiles
Antares II / Alpha Antares II Antares Antarean Antares Corona Worlds 2270[1] full
Antares VIII / Beta Antares IV Antares Antares Corona Worlds 2270[1] colony (Antares II)
Antede III Antede Antedian 2368[7][2]
Antica Beta Renner Antican 2365[1] same system as Selay
Antipathy IV Antipathy Andorian Empire 2265[2] colony (Andoria)
Antos IV Antos / Kappa Delphini Antosian Antosian Unity 2257[1]
Arbaza Arbazan Arbazan Arbazan Republic 2300[1]
Arcadia Vellun Gamma Arcadian Arcadian Free States 2286[1]
Aplithin Archanis / Arcanis 2197[8] colony (Federation) this system changes hands between the UFP & Klingons several times
Apollonia / Alpha Sigma X Alpha Sigma 2248[2] colony (Federation) site of an agricultural & industrial colony
Archer IV Archer / 61 Ursae Majoris 2205[2] colony (Federation) surveyed in 2151; remained uninhabited until discovery of antidote to toxic pollen was discovered in 2205[2]
Archer's Planet United Earth 2200[2] colony (Earth)
Arcturus IV Arcturus / Alpha Bootis Arcturian Arcturian Systems 2212[1] full
Ardana Mu Leonis / Rasalas Ardanan Plutocracy of Ardana 2263[9] full withdrew in 2269; re-joined 2307[2]
Argelius II Argelius / Ciatella / Iota Leonis Argelian Argelian Star Union 2230[4][1] associate
Argo / Hestalor UFC 78856 Auquan 2274[2]
Arima R-517 Ariman 2262 before 2267[1]; continued membership contingent upon active cease-fire with Mazdan
Ariannus Arianna 2184[2] colony (Federation)
Arin'Sen Arin'Sen 2216[2]
Arkaria Arkarian 2253[2]
Arken II Arken Arkenite Confederation of Arken 2165[10] former subjects of the Andorian Empire; released in 2161
Armens natives 2309[2] in SFC canon, Armens was an independent world that joined the UFP at some point after hosting the Treaty of Armens conference
Aronnia Aronnian 2253[11]
Arteline Arteline 2362[12]
Arvada III Arvada 2335[4][2] former Federation colony world (2255); acquired membership in 2335
Astral V Astral 2290[2]
Atrea IV Atrea Atrean 2205[4][2]
'aucdet IX 'aucdet natives[2] 2301[2] associate
Aulac Nadrax Aulacri 2246[1]
Aurelia II / Meriabii Aurelia / Xi Herculis Aurelian Aurelian Alliance 2248[1]
Avalon Caberhardt 2272[2] colony (Earth)
Axanar Epsilon Eridani / Delta Orcus Axanarri Republic of Axanar 2167[2] declared independence in August 2241[6]; rejoined 2250[6]
Azati Prime Azati Xindi Council 2311 colony (New Xindus)


Babel Wolf 424 2161 colony (Federation) used as a neutral site prior to the Federation's founding
Babylon Babylus colony (Federation)
Bajor B'hava'el Bajoran Third Republic of Bajor 2376[13] full
Ba'ku Ba'ku 2377
Baladar Beta Indi colony (Andorian)
Barabas Baran colony (Andorian)
Bardex III Bardex colony (Federation)
Barrony Zeta Hydra 281 colony (Federation) safe haven for escaped Orion slaves
Barsoom Delta Gamma 2173[2] full mining colony founded by Humans & Tellarites in the 22nd century[14]
Barzan II Barzan Barzan 2417[2] joined sometime in the early 25th century[15]
Baxter's World Beta Minora United Planets of Tellar colony (Tellar) agricultural & mining
Benecia Delta Majoris 2261 colony (Federation) Joined is a placeholder; settled prior to 2266[16]
Benzar Delta Pavonis Benzite 2366[17]
Berengaria V Berengaria colony (Federation)
Berengaria VII Berengaria 2161 full former Confederacy of Vulcan / United Earth colony; joined shortly after Romulan War/UFP founding
Beta III C-111 / 43993 / FGC-611 / UFC 611 Betan Elders 2267[18] protectorate[2] first visited in 2167[18]
Beta Aquilae II / Alshain II Alshain / Beta Aquilae II 2365 joined NLT 2370[19]
Beta Sirius IX Sirius / Alpha Canis Majoris 2237[2][20] colony established in 2237[2][20]
BeTau IV BeTau Starbase 315 was commissioned in 2331
Betazed Beta Zeta / Beta Veldonna Betazoid Betazed Ruling Council 2273[21][2] full 2273: probationary status; 2294: full admittance
Betelgeuse II Betelgeuse / Alpha Orionis Betelgeusian Betelgeusian Empire 2230[22]
Betelgeuse IV / Hav'a'halar Betelgeuse / Alpha Orionis Betelgeusian Betelgeusian Empire 2230[22]
Betelgeuse XIII Betelgeuse / Alpha Orionis Betelgeusian Betelgeusian Empire 2230[22]
B'hal Ta 2376 colony (Bajor)
Bijan Bijani 2332 "encountered by the United Federation of Planets during the 24th century"[23]
Bilana III Bilana Bilannan 2317[4][2][24]
Binderia Binderian 2178
Blackart Alpha Vergoris United Planets of Tellar colony {Tellar)
Blithinia Boron 437 United Planets of Tellar colony {Tellar)
Boliax / Bolarus XI Bolarus Bolian World Council 2270[25][26][2] full
Bonanza Aegis Aquila colony (Federation)
Borigris Borigrass colony (Federation)
Borom Alpha Quarram full former Andoria colony
Bre'el IV Bre'el Bre'ella 2349[4][2]
Buran Burani 2369
Bynaus / 101100010100110 Beta Magellan Bynar 2313[4][2]


Cairn / Vair Visium Cairn 2370[4]
Cait 15 Lyncis Caitian Caitian Union 2249[2] full first contact (by Federation) in 2219
Calanara Sapum Confederacy of Vulcan 2261[2] colony (Vulcan) settled in 2048 as a private Vulcan preserve
Calder II Calder colony (Federation)
Caldik Prime Caldik unknown if a homeworld or a colony
Caldos II Caldos / Beta Octantis 2334[4][2] colony (Federation)
Caleb IV[27] Kaleb[28] / Caleb / Chi Eridani colony (Federation) note the spelling difference (C vs K) between planets and (preferred) system names
Calindra IV Calindra colony (Xindi)
Calgary Griswald 3489 full former Federation colony
Callista / Beta Aurigae VII Beta Aurigae / Menkalinan full former home of the historic Zalkat Union; former Vulcan colony; settled prior to 2200[29]
Calsa Wolf 346 colony (Vulcan)
Campor III Campor 2371[30] colony (Federation)[2]
Camus II Alpha Camus Confederacy of Vulcan 2161 colony (Federation) former home to the extinct Yiteran civilization; archeological colony founded by Vulcans no later than 2150; turned over to Federation scientific community upon UFP founding
Canaris Scorpi Maxima colony (Andorian)
Candelar IV Candelar Candelaran 2350[4][2]
Candide Candida United Earth colony (Earth)
Canopus II Canopus / Alpha Carinae Canopian 2252[31][2] protectorate "sentient natives"; "surveyed in mid-23rd century"; two other Class M planets in system: Canopus III & Alpha Carinae V
Capella IV / Ceres Capella / Alpha Aurigae Capellan Ten Tribes 2188[2] protectorate first UFP contact in 2188
Carema III Carema rich in natural resources[32]
Carnegie Carnegie 2369[4][2] originally unaligned Human & various colony
Casperia Prime Casperia 2263[4][2] initially a colony (prior to 2175), before achieving membership
Castor Fields Castora colony (Federation)
Castrola IX Castrola colony (Federation)
Catulla Theta Pictoris Catullan 2279[2] after 2269[33]
Cavala Beta Forminia Andorian Empire colony (Andoria)
Cavalier Calka United Earth colony (Earth)
Centrelis Centrelian 2294[34] system unidentified
Ceopus Aecupus colony (Earth)
Ceron Ceron colony (Federation)
Cestus III Cestus 2271 colony (Federation) Star Fleet outpost (2265) destroyed in 2267; colony established following
Chandra IV Chandra Chandran 2177[35][2] protectorate first surveyed "some 90 years prior to 2267"[35]; colony of Chandra V[2]; invaded by Klingons in 2267 for slave labor & its industries
Chandra V Chandra Chandran 2177[35][2] protectorate first surveyed "some 90 years prior to 2267"[35]; invaded by Klingons in 2267 for slave labor & its industries; a space-going, pre-warp society
Charlemagne Aquila Scorpi colony (Federation)
Cheleb / Beta Ophiuchi VI Beta Ophiuchi / Cebelrai colony (Federation)
Chiron IV Chiron not related to the planets Cheron in the Beta Quadrant; planet name is a placeholder
Choblav Choblik 2319[4][2] system name TBD
Chyrellka / Chrellkan IV Chyrellkan 2269[4][2] colony (Federation) Pre-warp & independent Human colony; first contact with Federation in 2259; "now eager to apply for Federation membership"[36]
Cimera III Cimera Andorian Empire 2261 colony (Andoria) founded 1929[37][2]
Cochrane Zeta Riguli colony (Federation)
Coltar IV Coltar colony (Federation)
Commissariate Beta Trianguli colony (Federation)
Concordia Gamma Palabus colony (Federation)
Coopersworld colony system name unknown
Cor Caroli V Cor Caroli / Alpha Canum Venaticorum / 12 Canum Venaticorum Status & Joined TBD
Cor Caroli IX Cor Caroli / Alpha Canum Venaticorum / 12 Canum Venaticorum Confederacy of Vulcan 2336 colony (Vulcan) Joined is placeholder; settled prior to 2337[38]
Coridan III Coridan / Chi 1 Orionis / 54 Orionis Coridanite / Coridan, Coridanian / Coridani People’s Republic of Coridan 2267
Coridan IX Coridan / Chi 1 Orionis / 54 Orionis People’s Republic of Coridan 2267 colony (Coridan III)
Coromindas Coram colony (Tellar)
Corvan II Corvan 2249 colony (Federation) Joined is a placeholder; prior to 2250[39]
Covdival Cordival colony (Earth)
Crassenia Crovala 173 colony (Tellar)
Crassus Ambiphon colony (Earth)
Cremindas Beta Rigala colony (Delta IV)
Crepuscula IV Crepuscula Crepusculan 2256 protectorate planet name & Joined are placeholders; established as a protectorate no later than 2256[40]
Creras 2251 colony (Regulus V)
Crimilak Alpha Coranda colony (Delta IV)
Cromidia Gamma Ophiuchi colony (Federation)
Cruul 2251 colony (Regulus V)
Csau 2251 colony (Regulus V)
Curiosity Pharos 625 colony (Delta IV)
Cyclopus Verigus K colony (Federation)
Cygnet XIVa Cygnet / Omega-1 Cygni Cygnian State of Cygnet 2251[41]
Cygnus III Cygnus 2402 Joined is a placeholder; populated prior to 2402[42]
Cygnus IV Cygnus 2368 colony (Federation) Joined is a placeholder; scientific outpost established prior to 2368[43]; Status is TBD


Dadax Dextera 273 2286 TBD Joined is a placeholder; prior to 2287[44];
Daidaem Gamma Hydra 371 TBD TBD
Dalanda V Dalanda 2279 colony (Federation) Joined is a placeholder; prior to 2280
Dalvos Prime Dalvos 2369 TBD Joined is a placeholder; sometime prior to 2374[45]
Damiano Damiani 2371[4] protectorate protectorate status in 2341[2]
Dantar Federation & Klingons 2350 prior to 2357
Danter Danteri 2371 not to be confused with Danteri V, a Ferengi commerce world
Danton Major Danton Deltan Union 2279 colony (Delta IV) Joined is a placeholder; not before 2162; prior to 2280
Danula II Danula 2318 TBD Joined is a placeholder; prior to 2323[46]
Daran V / Kachissat Daran Shesshran 2222 the Shesshran are an indigenous population; Joined is a placeholder; a Federation colony was also established here prior to 2223, as (future President Hiram Roth was born in the colony that year; the Shesshran formerly became members after the founding of the colony, but prior to 2231[47]. (i.e., "recently admitted")
Darius III Delta Darius Deltan Union 2279 colony (Delta IV) Joined is a placeholder; not before 2162; prior to 2280
Darius IV Delta Darius 2268 prior to 2269[48]
Darmal Darmius TBD colony (Federation)
Darona Beta Zeta / Beta Veldonna Betazed Ruling Council 2273 colony (Betazed)
Dartanian Ti Che TBD colony (Federation)
Dedderai Dedderac Dedderac 2172[49][4][2] Joined is a placeholder
Dekendi III Dekendi Dekendi TBD
Delb II Delb Delbian 2322 Joined is a placeholder; joined prior to 2267[50]
Delta IV / Dhei Lta / Delta Triciatu / Delta Principius Deltan Deltan Union 2233[1] full
Delta Sigma IV Bader, Dorset 2378[4][2]
Delta Theta III Delta Theta natives n/a 2270[51] quarantine
Delta Vega Trimordidion 2260 colony (Federation) Joined is a placeholder; prior to 2265[52]
Democritus Demos 372 Alpha TBD TBD
Demoiselle II Demoiselle TBD TBD TBD
Deneb Alpha V / Deneb V Alpha Cygni Denebian 2259[2] joined the Federation over 120 years before Deneb Alpha IV, the Bandi world
Deneb Alpha IX / Deneb IX Alpha Cygni Commonwealth of Denebia 2259[2] colony (Deneb Alpha V)
Deneb Alpha XX / Deneb XX Alpha Cygni Commonwealth of Denebia 2259[2] colony (Deneb Alpha V)
Deneb Kaitos II Deneb Kaitos 2259 colony (Deneb Kaitos V) settled by the Klaha in the 21st century[53]; civil war over water rights broke out in 2250s[2]
Deneb Kaitos IV Deneb Kaitos Deirr 2259[2] includes a Federation colony established in the 2240s; Deneb Orbital Docks
Deneb Kaitos V Deneb Kaitos Klaha 2259[54] includes a Earth colony established prior to 2161; assigned protectorate status in 2160s
Deneb Kaitos VIa Deneb Kaitos Eyren 2259[2]
Deneva Prime Kappa Fornacis / Beta Darius 2277[4][2] protectorate colonized in 2148 as an asteroidal support base; protectorate status under United Earth
Dengella II Dengella 2254 TBD "'Joined is a placeholder; Federation presence established by 2259[55]
Denobula / Denobula Prime Primus Leonis Denobulan 2231
Denobula Triaxa Iota Bootis 2231 colony (Denobula) apparently a colony prior to UFP formation
Determination Demarcation TBD colony (Federation)
Dimorus IV Dimorus Dimorusian 2255 protectorate
Divestment Formindas 743 TBD TBD
Djana Inari & Djanai 2258
D'livian VI D'livian TBD TBD
Doxi Darlovan 277 TBD TBD
Dramia Dramian 2194 possibly protected when first surveyed[56]
Draylax Draylaxian 2340 probably would have been one of earliest members of UFP, but they were almost completely wiped out in the Romulan war [check this]
Dreon VII Dreon 2376 colony (Bajor)
Dundas Ursula Alpha 26 TBD TBD
Duo III Duostel Deltan Union TBD colony (Delta IV)


Edos Edosian 2197
Eeiauo Eeiauoan 2246 prior to 2268
Efros Efrosian 2169[4][2] former subjects of the Klingon Empire
Ekos Ekosian 2373
Elas Elasian 2263
Elaysia Elaysian 2276
Errigal Beta Ophiuchi / Cebelrai colony (Federation)
Evora Evora 2375 protectorate[57]


Fellebia 94 Aquarii Fellebian 2198[58] no later than 2259
Fillandia Bartz' Star Ariolo 2286[1] star expected to nova in 2380s
Freehaven 2376 colony (Bajor)


Galakhin Galakhi 2189
Gallam Gallamite 2310[4][2] first contact as early as 2250s
Gemworld Yilltern, Lipul, Frills,
Elaysian, Gendlii & Alpusta		 2356
Gideon Delta Doradus Gideonite / Gideon Gideon Council 2321 Joined is a placeholder
Gnala Gnalish 2317[4][2]
Golana 2376 colony (Bajor)
Gosh / Abyss Gosh Alpha / Abyss Alpha 2161 colony (Vulcan) established 1655[2]
Grammen Park Fomalhaut United Earth 2161 colony (Earth) founded in 2140[2]
Grazer Grazerite 2305[59]
Guidon Guidon 2345 this is probably a small collection of settled star systems; need to identify the home world
Gullrey Rey 2316


Halii Haliian 2263
Hamal IV / El Nath Hamal Hamalki
Hastings Fomalhaut United Earth 2161 colony (Earth) founded in 2140[2]
Havelind 2249 colony (Cait)
Hekaras Hekaran 2272
Hermat Hermat Hermat Directorate 2349[2]
Hermata / Amphibalus III Amphibalus Hermat Directorate 2349 colony (Hermat) founded 2279
Hochlor IV 2249 colony (Cait)
Hrell 2251 colony (Regulus V)
Hrusar 2251 colony (Regulus V)
Hsoren 2251 colony (Regulus V)
Hsuaw 2251 colony (Regulus V)
Huan Huanni 2293[4][2]


Icor IX Icorian 2185[4][2]
Igre Igresh 2239
Inferna Prime Inferna 2236[4][2] former Tellarite protectorate
Ithen 15 Virginis / Zaniah Ithenite / Dayen Ithenite Republic 2179[2] first contact with Humans occurred prior to 2154[60]
Izar Human 2183 withdrew from the UFP (2239); rejoins in 2260


Janus Horta 2271 strongly support this date, based on Kirk's assistance[61]
Jotunheim Human 2267 former colony


Kessik IV Kessik 2270 colony (Federation) founded as an independent in colony 2264; joined UFP at some point, probably before 2349 (2270 randomly determined)
Kaferia Kaferian 2202[62][2] note: the Human colony (Tau Ceti IV) is presently still an Earth colony
Kandilkar Kandilkari 2313[4][2]
Kashet Kasheeta 2281
Kazar Kazarite 2224[4][2]
Kern 2333 prior to 2409
Kerovi Kerovian 2373 withdrew from the UFP in 2378
Kidta / Deneb Alpha IV Alpha Cygni Bandi 2377[2]
Ki'siu 2270 colony (Boliax)
Klaestron IV Klaestron 2372 DS9 episode "Dax" suggests that the planet is not a UFP member (extradition treaty with the UFP) in 2369, while Star Charts indicates it was a member in 2378.
K'norm K'normian 2267
Koa Koas 2380[63]
Koblia Kobliad 2369 not to be confused with the Delta Quadrant's Kobali system
Kreetassa Kreetassan 2253[4][2]
Kreras 2251 colony (Regulus V)
Kreta / Deneb Alpha II Alpha Cygni Commonwealth of Denebia 2259[2] colony (Deneb Alpha V) first settled by the Denebians in 2077; UFP-independent Humans established a colony in 2205; planet joined UFP in 2259
Kruuri 2251 colony (Regulus V)
Ktaris Ktarian 2344
K'Vin K'Vin K'Vin Hegemony 2242 withdrew from the UFP in 2332 after "nearly 100 years"; maintained peace since
Kyppr Kypprite 2203[4][2]


Laurentian 2389 prior to 2409
Lembatta Prime Lembattan 2352
Lendria Lendrin 2373[64]
Lorillia Lorillian 2202 destroyed 2381
Lrru-Ir Irriol 2269
Luna Sol United Earth 2161 colony (Earth)


Magna Roma Magna Roman 2337
Makus III Makusian 2193[4][2]
Mandel prisoners 2245 prior to 2256
Mantilles 2298 former Federation colony
Marcos XII 2254 former Federation colony
Mars Sol Human Confederated Martian Colonies 2162[4] full
Matern Materni 2271[4][2]
Mazda R-517 Mazdan 2262 before 2267[1]; continued membership contingent upon active cease-fire with Arima
Medusa Xi Hydrae IV Medusan 2188
Megara 329 Aurigae Megaran 2406[2] protectorate protectorate status modified in 2369; joined at a later time
Meldrar I 2376 colony (Bajor)
Melkot Melkot (Melkotian) 2273 first contact 2268; joined just prior to Betazed
Menk (Valakis) Menk & Valakian 2236 first (Earth) contact 2151; Valakians dying out
Merak II Merakan 2161 colony (Vulcan)
Mestiko Payav 2295[4][2] year is rather strong, due to novel[65]
Mintaka III Mintaka / Delta Orionis Mintakan n/a 2361 protectorate Joined is a placeholder; occurred prior to 2366[66]
Mizar II Mizarian 2320 prior to 2366
Monchezke Monchezkin 2179
Motal 2270 colony (Boliax)
Mriri 2251 colony (Regulus V)


Nador Nadorian 2267
Napea Napean 2320
Nasat Nasat & Citoac 2294
New Aberdeen Aldebaran 2216 full same system as Aldebaran IV; former Earth colony; settled prior to 2135
New Bajor 2376 colony (Bajor)
New Halana Halanan 2378
New Paris Omega Aurigae Human 2274 colony (Earth) established (2105); not to be confused with the colony on Turkana IV
New Xannon Xanno 2229
New Xindus Xindi Xindi Council 2311
Nicolii Camon colony (Earth)[2]


Ochat Ochati 2217[4][2]
Ontail Ontailian 2374[67]
Ophiucus III 36 Ophiuchi 2212[68] colony (Earth)
Oriki Oriki 2344[4][2]
Osadj Osadjani 2190
Pacifica Selkie 2250[4][2] also the site of a Federation colony, established in early 2260s
Pahkwa Majoris Pahkwa-thanh 2360[69]
Pandril Pandrilite 2312[4][2]
Pangea Human 2229 former Federation colony
Parnasi Parnasi 2266[4][2] Part of the 2370s secessionist movement
Passgate Alpha Geminorum / Castor 2179 colony (Federation) center for trade and the location of a Star Fleet base
Peliar Zel II Peliar Zel PayavPeliar 2296[4][2]
Peliar Zel Alpha Peliar Zel PayavPeliar 2296[4][2] colony (Peliar Zel II)
Peliar Zel Beta Peliar Zel PayavPeliar 2296[4][2] colony (Peliar Zel II)
Pentam V Pentam Pentamian Pentamian Assembly 2293[4][2]
Penzatti Penzatti 2205
Persephone 2263 post-2259
Phylos Phylosian 2280 post-2270
P'Jem 2161 colony (Vulcan)
Pillagra 2376 colony (Bajor)
Proxtrey / Alpha Proxima III Alpha Proxima natives 2189 protectorate world devastated in 1168 nuclear war; two warring pre-warp cultures; protectorate established upon founding of Alpha Proxima II colony
Priors World 2241 prior to 2256
Prophet's Landing 2376 colony (Bajor)
Proxima Centauri Alpha Centauri Alpha Centauri Concordium of Planets 2161 colony (Earth) colonized with support of Alpha Centauri Prime; governed by Alpha Centauri Concordium of Planets
Pythagos Pythagian 2312[4][2]


Raatooras 2216 colony (Arin'Sen)
Rakon IV Rakon / 39 Tauri 2328 colony (Tandar Prime)
Rana IV Delta Rana 2361 colony (Federation) Joined is a placeholder; founded prior to 2366[70]; destroyed in 2366
Ra'Nar 2270 colony (Boliax)
Ramatis III Ramatis Ramatin 2195[4][2] at least 2 in-system colonies
Regulus III Regulus / Alpha Leonis / Gamma Zeta Veliki 2243[4][2] first of three Class M planets in the Regulus system to join
Regulus IV Regulus / Alpha Leonis / Gamma Zeta Khonsui 2287[4][2] last of three Class M planets in the Regulus system to join
Regulus V Regulus / Alpha Leonis / Gamma Zeta Regulan Regulan Trade Alliance[2] 2251[4][2]
Rhaandaran / Rhaandarel Alpha Indi Rhaandarite 2226[2]
Rigel II Beta Rigel 2275[26] colony (Rigel III)
Rigel III Beta Rigel Chelarian 2275[26] including colony world Rigel II
Rigel IV Beta Rigel 2184[71] colony (Rigel V)
Rigel V Beta Rigel Zami & Kaylar 2184[71] expelled in 2293; re-admitted in 2297
Rigel XIV Beta Rigel 2271[2] colony (Rigel XVa)
Rigel XVa Beta Rigel Jelna 2271[2] colonies: Rigel XIV, Rigel XVb, Rigel XVI
Rigel XVb Beta Rigel 2271[2] colony (Rigel XVa)
Rigel XVI Beta Rigel 2271[2] colony (Rigel XVa)
Rim 2270 colony (Boliax)
Risa Epsilon Ceti B Risan Risian Hedony 2249[72]
Roxan Alpha Geminorum / Castor Andorian Empire 2161 colony (Andoria)[73] founded in 2054[2]
Rrarash 2251 colony (Regulus V)


S'ti'ach'aas S'ti'ach 2371
Sandpinia Sandpinian 2268 sometime in the 23rd century
Sauria Psi Serpentis Saurian Global League of Lyaksti'kton 2187 full
Scoridia Scoridian 2204[4][2]
Selay Beta Renner Selay 2369 same system as Antica
Selelvia Selelvian 2251 UFP membership revoked (2376)
Selene Selenean 2366
Shamin / O'Ryan's Planet Shamin 2277 indigenous, non-spacefaring people; first contacted by Paddy O'Ryan in 2198[2]; planet named after him until at some point changed to Shamin
Shesint 2251 colony (Regulus V)
Shol 2251 colony (Regulus V)
Sigma Draconis III Sigma Draconis natives 2165 protectorate
Sigma Draconis IV Sigma Draconis natives 2165 protectorate
Sigma Draconis VI Sigma Draconis Eymorg 2268 protectorate
Sigma Iotia II Sigma Iotia Iotian 2368 protectorate
Springboard / Beta Sirius V Sirius / Alpha Canis Majoris Alpha Centauri Concordium of Planets 2161 colony (Alpha Centauri Prime) settled in 2153[2][74]
Ssan Ssana 2260
Sulamid Sulamid 2256
Syrath Syrath 2336[4][2]


Tesnia Tesnian 2231[4][2]
Tandar Prime Rakon / 39 Tauri Tandaran 2328[75][4][2]
Ta'Trosha IV Ta'Trosha Ta'Troshan 2361[76]
Tenara 2287
Teneebia Alpha Comae Berenices Tenebian 2304[2]
Terra Nova 2178 colony (Earth)
Terrellian II / Thelema Thelemites & Terralyns 2308 settled by the Terralyns, unaware of the original Tessenites held in organic stasis
Tessen III Tessenite 2206
Tiburon Tiburon 2229[77]
Tlorsh / Anchor Beta Hydra 378 United Planets of Tellar 2244 colony (Tellar)
Triex Triexian 2374[78]
Trillius Prime Trill (humanoid) & Trill (symbiote) 2227[4][2]
Troyius Troyian 2311
Tygar Tygarian 2219
Tyrellia Tyrellian 2285
Tyrus III 2337[4][2] indigenous people wiped out by 1370[79]; presumably re-colonized by some Federation species
Ullia Ullian 2320
Umoth VIII 2320 colony (Federation) became independent in 2370 per Federation-Cardassian Treaty
Valo II 2376 colony (Bajor)
Valo III 2376 colony (Bajor)
Valzhan Valzhan 2268[80][4][2]
Vancadia / Chrellkan III Chyrellkan 2269 colony (Chrellkan IV)
Vega Colony Alpha Lyrae Vega Colony 2164[4] colony (Earth)
Verdanis Verdanite 2300 21st century mutated Humans, transplanted from Terratin colony joined post-2269 & pre-2378
Vestios Prime Vestian Vestian Council 2310[81]
Vestios II Vestian Council 2310 colony (Vestios Prime)
Vico V Vico 2320 colony (Federation)
Vobilin Vobilite 2186 early member of the UFP
Vorgos Vorgon 2358[3]


Xelata Xeltian 2289 first contact 2282
Xyrillia Xyrillian 2259 date arbitrary, before 2300


Yridia Prime Yridian 2363 first contact in 2360s


Zadar IV 2315 colony (Earth)
Zakdorn Zakdorn 2344 full
Zalda / Zald Dolium Zaldan 2290[1]
Zanri Zanri 2292[4][2]
Zaran II Zaran Zaranite 2268[4][2]
Zarin Zarin 2206[4][2]
Zeon Zeoni 2294
Zytchin III Zytchin 2278 colony (Federation)
member system species state joined status note

Notes

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 USS Theurgy: "Federation Member Species (2381)"
  2. ↑ 2.000 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 2.009 2.010 2.011 2.012 2.013 2.014 2.015 2.016 2.017 2.018 2.019 2.020 2.021 2.022 2.023 2.024 2.025 2.026 2.027 2.028 2.029 2.030 2.031 2.032 2.033 2.034 2.035 2.036 2.037 2.038 2.039 2.040 2.041 2.042 2.043 2.044 2.045 2.046 2.047 2.048 2.049 2.050 2.051 2.052 2.053 2.054 2.055 2.056 2.057 2.058 2.059 2.060 2.061 2.062 2.063 2.064 2.065 2.066 2.067 2.068 2.069 2.070 2.071 2.072 2.073 2.074 2.075 2.076 2.077 2.078 2.079 2.080 2.081 2.082 2.083 2.084 2.085 2.086 2.087 2.088 2.089 2.090 2.091 2.092 2.093 2.094 2.095 2.096 2.097 2.098 2.099 2.100 2.101 2.102 2.103 2.104 2.105 2.106 2.107 2.108 2.109 2.110 2.111 2.112 2.113 2.114 2.115 2.116 2.117 2.118 2.119 2.120 2.121 2.122 2.123 2.124 2.125 2.126 SFC
  3. ↑ 3.0 3.1 Memory Beta: "Sector Sigma-485"
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37 4.38 4.39 4.40 4.41 4.42 4.43 4.44 4.45 4.46 4.47 4.48 4.49 4.50 4.51 4.52 4.53 4.54 4.55 4.56 4.57 TrekBBS: "Members of the Federation"
  5. ↑ Memory Beta: "Alonis"
  6. ↑ 6.0 6.1 6.2 Guide: 2200-2240 - Way of the Warrior
  7. ↑ Memory Alpha: "Antede III"
  8. ↑ The Federation (FASA), p. 44
  9. ↑ Memory Beta: "Ardana"
  10. ↑ Memory Beta: "Arken II"
  11. ↑ Memory Beta: "Federation members"
  12. ↑ Memory Beta: "Arteline IV"
  13. ↑ Memory Beta: "Bajor"
  14. ↑ Memory Beta: "Barsoom"
  15. ↑ Memory Alpha: "Barzan"
  16. ↑ Memory Alpha: "Benecia Colony"
  17. ↑ Memory Beta: "Benzite"
  18. ↑ 18.0 18.1 Memory Alpha: "The Return of the Archons (episode)"
  19. ↑ Memory Alpha: "Eye of the Beholder (episode)"
  20. ↑ 20.0 20.1 Memory Alpha: "Sirius IX"
  21. ↑ Memory Beta: "Betazed"
  22. ↑ 22.0 22.1 22.2 Memory Beta: "Betelgeuse"
  23. ↑ Memory Beta: "Bijani"
  24. ↑ Guide: Guardian
  25. ↑ Planets of the UFP (Last Unicorn Games)
  26. ↑ 26.0 26.1 26.2 Worlds (Decipher sourcebook)
  27. ↑ Memory Alpha: "Caleb IV"
  28. ↑ Memory Alpha: "Kaleb"
  29. ↑ Memory Beta: "Callista"
  30. ↑ Memory Alpha: "Campor III"
  31. ↑ Memory Alpha: "Alpha Carinae II"
  32. ↑ [https://memory-alpha.fandom.com/wiki/Carema_III Memory Alpha: "Carema III "]
  33. ↑ Memory Alpha: "Catulla"
  34. ↑ Memory Beta: "Centrelis"
  35. ↑ 35.0 35.1 35.2 35.3 Memory Beta: "Chandran"
  36. ↑ Memory Alpha: "Renegade (novel)"
  37. ↑ Memory Beta: "Cimera III"
  38. ↑ Memory Beta: "Cor Caroli IX"]
  39. ↑ Memory Alpha: "Corvan II"
  40. ↑ Memory Alpha: Crepusculan
  41. ↑ Star Charts
  42. ↑ Memory Beta: "Cygnus III"
  43. ↑ Memory Beta: "Cygnus system"
  44. ↑ Memory Beta: "Dextera 273"
  45. ↑ Memory Alpha: "Dalvos Prime"
  46. ↑ Memory Alpha: "Danula II"
  47. ↑ Guide: Rochester
  48. ↑ Memory Beta: "Darius IV"
  49. ↑ Memory Beta: "Dedderai"
  50. ↑ Memory Alpha: "Delba II"
  51. ↑ "Delta Theta III"
  52. ↑ Memory Alpha: "Delta Vega"
  53. ↑ Memory Beta: "Deneb Kaitos II"
  54. ↑ Memory Beta: "Deneb Kaitos V"
  55. ↑ [https://memory-alpha.fandom.com/wiki/A_Quality_of_Mercy_(episode) Memory Alpha: "A Quality of Mercy (episode) "
  56. ↑ Memory Beta: "Gary"
  57. ↑ Memory Alpha: "Evora"
  58. ↑ Memory Alpha: "Fellebia"
  59. ↑ Articles of the Federation (novel)
  60. ↑ Memory Alpha: "Ithenite"
  61. ↑ Memory Beta: "Devil's Bargain"
  62. ↑ Memory Alpha: "Tau Ceti III"
  63. ↑ Memory Beta: "Koa"
  64. ↑ Memory Beta: "Lendrin"
  65. ↑ Mere Anarchy (novel)
  66. ↑ Memory Alpha: "Mintakan"
  67. ↑ Memory Beta: "Ontailian"
  68. ↑ Memory Beta: "Ophiucus III"
  69. ↑ Memory Beta: "Pahkwa-thanh"
  70. ↑ Memory Alpha: "Rana IV"
  71. ↑ 71.0 71.1 The Worlds of the Federation (Pocket Books)
  72. ↑ Memory Beta: "Risa"
  73. ↑ Memory Beta: "Roxan"
  74. ↑ Memory Beta: "Springboard"
  75. ↑ Memory Beta: "Tandaran"
  76. ↑ Memory Beta: "Ta'Troshan"
  77. ↑ Starfleet Operations Manual (Decipher), p56
  78. ↑ Memory Beta: "Triexian"
  79. ↑ Memory Beta: Vulcan-Romulan War
  80. ↑ Memory Beta: "Valzhan"
  81. ↑ Memory Beta: "Vestians"

Other Resources

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