 | List of Star Trek Planets: Encyclopedia II - List of Star Trek Planets - A
List of Star Trek Planets - A
Abadeen
Acamar III
Adara - Class Y planet in the Delta Quadrant featured in the Voyager episode "Flesh and Blood".
Adarak Prime - Dominion weapons depot featured in the DS9 episode "When It Rains..."
Adelphous IV - planet featured in the TNG episode "Data's Day".
Adigian Prime
Agalon Prime
Agaron
Agosoria
Akaali - also called Omega Sagittarii III
Akrayde VII
Akritiri
Alastria
Aldea - also known as Epsilon Mynos, is a mythological planet featured in the TNG episode "When the Bough Breaks". The planet reveals itself to the crew of the Enterprise-D who discovers the ancient society is dying.
Aldebaran - planet mentioned in the TOS episode "Where No Man Has Gone Before"
Aldebaran III - mentioned in the TOS epsisode "The Deadly Years".
Aldron IV
Algeron - planet within the Romulan Neutral Zone. It is where the Treaty of Algeron was signed where the Federation agreed with the Romulans to never to develop cloaking device technology.
Algitark
Alpha 117 - a Class M planet featured in the TOS episode "The Enemy Within", where a transporter malfunction causes the creation of a duplicate Captain Kirk with evil tendencies.
Alpha V - a human colony world mentioned in the TOS episode "Charlie X". Charlie had relatives living there.
Alpha Carinae V - a planet mentioned in the TOS episode "The Ultimate Computer". The planet was surveyed by the M5 computer during trial runs.
Alpha Eridani II - a Federation colony mentioned in the TOS episode "Wolf in the Fold". The planet's main city is Heliopolis.
Alpha Majoris I - planet mentioned in TOS episode "Wolf in the Fold".
Alpha Moon - featured in the TNG episode "The Host".
Alpha Onias III - featured in the TNG episode "Future Imperfect".
Altair - system with numerous planets featured in the Star Trek series.
- Altair III - mentioned in the TNG episode "Encounter at Farpoint".
- Altair IV - featured in the DS9 episode "Prophet Motive"
- Altair VI - a Federation colony mentioned in the TOS episode "Amok Time".
Altec - also known as Omega Sagitta, featured in the TNG episode "The Outrageous Okona".
Altoor VII
Amargosa - star system with a Federation research station that was attacked by the Romulans in their attempt to aquire a trilithium weapon. It was featured in the movie Star Trek: Generations. The Amagosa star was destroyed by the renegade scientist Dr. Tolian Soran, in his attempt to change the course of the Nexus energy ribbon.
Amleth Prime
Anara Prime
Andor - or also called Andor or Procyon VIII, homeworld of the Andorian species.
Angel One - a planet dominated by women who treat the men of their culture as property. It was featured in the TNG episode "Angel One".
Angosia III - featured in the TNG episode "The Hunted".
Antares IV
Antide III - featured in the TNG episode "Manhunt". It is home to the ichthyohumanoid species Antedeans, a member of the UFP.
Antos IV - planet mentioned in the TOS episode "Whom Gods Destroy". It is inhabited by a shape-shifting race.
AR-558
Arakang VII - featured in the DS9 episode "Q-Less.
Archanis IV - featured in the DS9 episodes "The Die is Cast" and "Broken Link".
Archer's Planet - planet named for Captain Johnathan Archer which lies in the Gamma Trianguli system, featured in the Enterprise episode "In a Mirror, Darkly" Along with Archer IV it is one of two planets named after Jonathan Archer - the 22nd century Captain of the Enterprise NX-01.
Archer IV - planet in the 61 Ursae Majoris system mentioned in the TNG episode "Yesterday's Enterprise". It is a Class-M planet with a population of nearly 700 million. Archer IV is one of two planets named in honor of Captain Jonathan Archer who was Captain of the 22nd century Enterprise. The planet was home to a pollen that contained the toxin tropolisine, which caused paranoid delusions among the first group to visit the planet, and with prolonged exposure, caused death if notvtreated. The planet was not suitable for human colonization until 2290, when the pollen was finally eliminated.
Ardana - or Mu Leonis A III, is a planet featured in the TOS episode "The Cloud Minders". The planet's society is split between the elite class who reside in luxurious floating cities, and the lower class "Trogdoylites" who are forced to work in dangerous mines on the surface.
Argellius II - a planet visited by the USS Enterprise in the TOS episode "Wolf in the Fold" that has a middle-eastern cultural influence.
Argus X - planet mentioned in the TOS episode "Obsession".
Argratha - Gamma Quadrant planet featured in the DS9 episode "Hard Time".
Arianus - planet mentioned as the destination of the USS Enterprise in the TOS episode "Let That Be Your Last Battlefield".
Arlof IX - planet mentioned in the TNG episode "The Neutral Zone".
Armus IX - a Federation world with a Starbase. It was mentioned in the TNG episode "Datalore".
Arret - planet featured in the TOS episode "Return to Tomorrow".
Ashalon V - Cardassian world with a fuel depot featured in the DS9 episode ""Dreadnought".
Atalia VII - planet featured in the TNG episode "The Chase".
Atbar Prime
Athos IV - planet featured in the DS9 episode "Blaze of Glory".
Atrea IV - planet featured in the TNG episode "Inheritance".
Audet IX - planet mentioned in the TNG episode "The Child".
Avenal VII
Axanar - star system mentioned in the TOS episode "Whom Gods Destroy".
Azati Prime - Xindi colony featured in the Enterprise episodes "Azati Prime" and "Stratagem". It is located inside the Delphic Expanse. A Xindi colony of primates resided there at one time, and it was the site for the construction of a Xindi weapon of mass destruction.
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