Warning! This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.
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The membership of the United Federation of Planets consisted of worlds and species with shared principles of universal liberty, rights, and equality. (PRO: "Starstruck")
At its founding in 2161, the Federation began with four members: Earth, Andoria, Vulcan and Tellar Prime. (ENT: "These Are the Voyages...")
All members of the Federation had a voice in its governance. (SNW: "Spock Amok")
By 2373, the Federation consisted of at least one hundred and fifty member planets, spread over eight thousand light years. (Star Trek: First Contact)
At its peak, the Federation included 350 member worlds. By 3189, as a result of The Burn, there were only 38 known to Federation Headquarters. (DIS: "Die Trying")
After the cause of The Burn was discovered, the Emerald Chain crippled, and a planet made of Dilithium was discovered, the Federation began to rebuild with worlds such as Trill and Ni'Var rejoining the Federation, leading to membership numbering at 60 in 3190. (DIS: "All Is Possible") After the USS Discovery made contact with Species 10-C, additional worlds opened negotiations to join or rejoin. Such as Andoria who began talks and Earth who were ready to rejoin immediately. (DIS: "Coming Home")
Federation planets[]
Founding members[]
The United Federation of Planets was founded in 2161 by the following members:
- Andoria
- Homeworld of the Andorians and the Andorian Empire. (ENT: "Zero Hour", "These Are the Voyages...") By 3190, they had left, but talks to rejoin commenced after the DMA crisis. (DIS: "Coming Home")
- Earth
- Homeworld of the Humans and United Earth; left the Federation following the Burn in 3089. (ENT: "Zero Hour", "These Are the Voyages..."; DIS: "People of Earth") Voiced intent to rejoin in 3190. (DIS: "Coming Home")
- Tellar Prime
- Homeworld of the Tellarites. (ENT: "Zero Hour", "These Are the Voyages...") They were the only founding member that never left into the 32nd century. (DIS: "Coming Home")
- Vulcan
- Homeworld of the Vulcans and the Vulcan High Command. Planet renamed to Ni'Var following Vulcan-Romulan reunification; left the Federation following the Burn in 3089, and rejoined in 3190. (TNG: "Gambit, Part II"; ENT: "Zero Hour", "These Are the Voyages..."; DIS: "Unification III", "All Is Possible")
Council members[]
The following are members of the Federation who are known to be on the Federation Council.
- Arcadian homeworld
- Homeworld of the Arcadians. (Star Trek IV: The Voyage Home)
- Ariolo homeworld
- Homeworld of the Ariolo. (Star Trek IV: The Voyage Home)
- Bzzit Khaht homeworld
- Homeworld of the Bzzit Khaht. (Star Trek IV: The Voyage Home)
- Caitian homeworld
- Homeworld of the Caitians. (Star Trek IV: The Voyage Home)
- Delta IV
- Homeworld of the Deltans. (Star Trek IV: The Voyage Home)
- Efrosian homeworld
- Homeworld of the Efrosians. (Star Trek VI: The Undiscovered Country)
- Grazerite homeworld
- Homeworld of the Grazerites. (DS9: "Homefront")
- Kasheeta homeworld
- Homeworld of the Kasheeta. (Star Trek IV: The Voyage Home)
- Unnamed Federation planet
- Home to the unnamed alien council members. (Star Trek IV: The Voyage Home)
- Xelatian homeworld
- Homeworld of the Xelatians. (Star Trek IV: The Voyage Home)
- Zaranite homeworld
- Homeworld of the Zaranites. (Star Trek: The Motion Picture; Star Trek IV: The Voyage Home; Star Trek VI: The Undiscovered Country)
Other known members[]
- Arbazan homeworld
- Homeworld of the Arbazan. (DS9: "The Forsaken")
- Ardana
- Homeworld of the Ardanans. (TOS: "The Cloud Minders")
- Barzan II
- Homeworld of the Barzan. (DIS: "Die Trying")
- Benzar
- Homeworld of the Benzites. (TNG: "Coming of Age")
- Betazed
- Homeworld of the Betazoids. (TNG: "Haven")
- Bolarus IX
- Homeworld of the Bolians. (TNG: "Qpid"; DS9: "The Forsaken")
- Corazonia
- Homeworld of the Corazonians. (LD: "In the Cradle of Vexilon")
- Coridan
- Homeworld of the Coridanites. (TNG: "Sarek")
- Gelrak V
- Homeworld of the Gelrakians. (LD: "Temporal Edict")
- Haliian homeworld
- Homeworld of the Haliians. (TNG: "Aquiel")
- Hekaras II
- Homeworld of the Hekarans. (TNG: "Force of Nature")
- Kaminar
- Homeworld of the Kelpiens and the Ba'ul. (DIS: "Die Trying")
- Peliar Zel II
- Homeworld of the Pelians. (TNG: "The Host")
- Rigel IV
- Homeworld of the Rigellians. (Star Trek: The Motion Picture)
- Risa
- Homeworld of the Risians. (TNG: "Captain's Holiday")
- Trill
- Homeworld of the Trill. (DIS: "That Hope Is You, Part 2")
- Unnamed Federation planet
- Home to the unnamed alien ambassadors. (TOS: "Journey to Babel")
- Unnamed Federation planet
- Home to the unnamed copper-skinned aliens. (TOS: "Journey to Babel")
- Unnamed Federation planet
- Home to the unnamed cross-dressing delegates. (TOS: "Journey to Babel")
- Unnamed Federation planet
- Home to the unnamed female delegates. (TOS: "Journey to Babel")
- Unnamed Federation planet
- Home to Volis' species. (TOS: "Journey to Babel")
- Unnamed Federation planet
- Home to the unnamed brown-skinned delegates. (TOS: "Journey to Babel")
- Zakdorn homeworld
- Homeworld of the Zakdorn. (TNG: "Peak Performance")
- Zelonite homeworld
- Homeworld of the Zelonites. (Star Trek VI: The Undiscovered Country)
Furthermore, Ithenite, Klingons, and Xindi were mentioned by Daniels as part of the Federation in a possible 26th century. (ENT: "Azati Prime")
Protectorates[]
- Evora homeworld
- Homeworld of the Evora. (Star Trek: Insurrection)
- Coppelius (also called Ghulion IV)
- Homeworld of the Coppelius androids. (PIC: "Et in Arcadia Ego, Part 2")
Colonies[]
- See: Federation colonies
Proposed members[]
These following were in the process of gaining Federation member status as of the year indicated.
- Angosia III (2366)
- Homeworld of the Angosians. (TNG: "The Hunted")
- Antede III (2365)
- Homeworld of the Antedians. (TNG: "Manhunt")
- Antica (2364)
- Homeworld of the Anticans. (TNG: "Lonely Among Us")
- Bajor (2373)
- Homeworld of the Bajorans. (DS9: "Emissary")
- Cairn homeworld (2370)
- Homeworld of the Cairn. (TNG: "Dark Page")
- Catulla (2269)
- Homeworld of the Catullans. (TOS: "The Way to Eden")
- Ferenginar (2381)
- Homeworld of the Ferengi. (LD: "Parth Ferengi's Heart Place")
- Gideon (2268)
- Homeworld of the Gideon and the Gideon Council. (TOS: "The Mark of Gideon")
- Kesprytt III (2370)
- Homeworld of the Kesprytt and the Kes and Prytt governments. (TNG: "Attached")
- Selay (2364)
- Homeworld of the Selay. (TNG: "Lonely Among Us")
Uninhabitable[]
Appendices[]
Related topics[]
Background information[]
In TOS: "Journey to Babel", set in 2268, the ambassadors of Federation planets attended the Babel Conference, at that time there were thirty-two ambassadors, suggesting there were at least thirty-two member worlds in the Federation at that time.
According to a dossier on the home page of Star Trek, in the alternate reality, the Federation had one hundred twenty member planets and seven hundred colonies in the 2250s. [3]
According to Star Trek: Star Charts (United Federation of Planets IV), in 2378, there were 183 members and 7,128 affiliates. The area of the Federation was eight thousand cubic light years. At the last census, in 2370, there were 985 billion individuals living in the Federation.
Aleek-Om was identified as a "Federation historian" in the Star Trek Concordance, possibly based on the script, suggesting Aurelia might be a member. Bilana III was also identified as a member in the Star Trek Encyclopedia (4th ed., vol. 1, p. 83) and Star Trek: Star Charts. In Star Trek Online's Agents of Yesterday expansion pack, Mizar IV was the site of a Federation colony, suggesting that Mizar II is located within Federation space and holds a membership on the Federation Council.
"Magic to Make the Sanest Man Go Mad" introduced the idea of "Federation aligned species", though no examples were given. According to "Maps and Legends", by 2399 thousands of species depended on the Federation for unity and cohesion.
External links[]
- Federation colonies at Memory Beta, the wiki for licensed Star Trek works
- Federation members at Memory Beta, the wiki for licensed Star Trek works
- Federation protectorate at Memory Beta, the wiki for licensed Star Trek works