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Class M

"Maybe we should've picked one with a little more blue and green on it."

During the mid-22nd century, Vulcan science used the term Minshara-class for such planets. Vulcans were not able to confirm if a planet was Minshara-class through orbital scans, instead sending down probes to collect the necessary data. (ENT: "Strange New World") In 2151, Starfleet officers were not familiar with the term and Enterprise chose to adopt it. However, by 2154, Starfleet had adopted the term class M. A century later, that term was in general use in Starfleet, even though the term "Earth-type" was also occasionally used.

A planet could fall within the range of the M-class classification. This range was from 1 to 4. The Koinonian homeworld was an example of an M-class type 4 planet. (TNG: "The Bonding", "Clues")

The term was sometimes used to characterize an atmosphere rather than a planet. The standard environment aboard Federation starships was class M. (TNG: "New Ground", "Relics")

Image Name Location Indigenous sentient species Notes Source 892-IV, remastered 892-IV System 892 892-IV natives Density, atmosphere, and proportion of land to water identical to those of Earth; diameter and layout of land masses somewhat different TOS: "Bread and Circuses" Akaali homeworld Akaali homeworld 78 light years from Earth, Alpha Quadrant Akaali ENT: "Civilization" Alpha Carinae II Alpha Carinae II Canopus, Beta Quadrant Alpha Carinae II natives TOS: "The Ultimate Computer" Alpha Onias III remastered Alpha Onias III Alpha Onias system, Beta Quadrant TNG: "Future Imperfect" Alshain IV Alshain IV Alshain DIS: "Kobayashi Maru" USS Franklin escapes Altamid Altamid Altamid system, Necro Cloud Ancient Ones Star Trek Beyond Angel One remastered Angel I Near the Romulan Neutral Zone Angel I natives TNG: "Angel One" Ankari homeworld Delta Quadrant Ankari VOY: "Equinox" Archer IV orbit Archer IV 61 Ursae Majoris None ENT: "Strange New World", "Home" Argeth Argeth DIS: "Scavengers" Arret remastered Arret Alpha Quadrant Arretan Atmosphere destroyed 500,000 years ago during a civil war TOS: "Return to Tomorrow" Ba'ku planet Ba'ku Briar Patch, Sector 441, Alpha Quadrant Metaphasic radiation from the rings grants those on the surface immortality Star Trek: Insurrection Barradas III, remastered Barradas III Barradas system, Sector 2158, Beta Quadrant TNG: "Gambit, Part I" Berengaria VII Berengarius system, Alpha Quadrant None TOS: "This Side of Paradise"; ENT: "Bound" Boraal II Boraal II Boraalans Biosphere destroyed by an atmospheric dissipation in 2370 TNG: "Homeward" Boreth, 2257 Boreth Beta Quadrant TNG: "Rightful Heir"; DIS: "Through the Valley of Shadows" Bringloid V, remastered Bringloid V Bringloid system, Ficus sector Devastated by solar flares in 2365, habitability uncertain TNG: "Up The Long Ladder" Cajitar IV Cajitar IV Cajitar system SNW: "The Broken Circle" Ceti Alpha V, 2156 Ceti Alpha V Ceti Alpha star system, Sector 25712, Alpha Quadrant "Barely" class M to begin with; further devastated by an orbital shift after the explosion of Ceti Alpha VI in late-2267 or early-2268 TOS: "Space Seed"; Star Trek II: The Wrath of Khan; ENT: "Twilight" Coppelius Coppelius Ghulion system, Vayt sector PIC: "Et in Arcadia Ego, Part 1" Dannus V from space Dannus V Near the Gamma Quadrant, in the galactic rim DIS: "Terra Firma, Part 1" Dansk LD: "Where Pleasant Fountains Lie" Delphi Ardu, remastered Delphi Ardu IV Delphi Ardu system No indigenous life forms as of 2364 TNG: "The Last Outpost" Delta Theta III Delta Theta III Delta Theta III aborigines TAS: "Bem" Delta Vega Vulcan system Delta Vega 40 Eridani A, Vulcan system, Sector 001, Alpha Quadrant Star Trek Dozaria Dozaria Dozaria system "Barely" class M DS9: "Indiscretion" Draygo IV Draygo IV Cardassian sector TNG: "Homeward" Draylon II Draylon II Bajoran sector, Alpha Quadrant DS9: "Sanctuary" Earth Earth Sol system, Sector 001, Alpha Quadrant Humans, Neanderthals, Voth, and Humpback whales Star Trek: The Motion Picture, et al Gorn hunter over Finibus III Finibus III Finibus system Orbits a black hole. SNW: "Memento Mori" Founders' homeworld, 2371 First Founders' homeworld Omarion Nebula, Gamma Quadrant A rogue planet; devastated by orbital bombardment during the Battle of the Omarion Nebula in 2371 DS9: "The Search, Part I", "The Die is Cast" Gamma Hromi II remastered Gamma Hromi II Gamma Hromi, Hromi Cluster, Beta Quadrant TNG: "The Vengeance Factor" Gamma Hydra IV Gamma Hydra IV Gamma Hydra, Gamma Hydra sector, Beta Quadrant TOS: "The Deadly Years" Geryon Geryon Orbiting Theta Helios Described as a "desert moon". DIS: "All Is Possible" Halem'no Halem'no Halem'nites Much of the planet's biosphere had been consumed by dust storms by 3191, with only a Denobulan weather modification tower providing irrigation to a small region. DIS: "Whistlespeak" Hanon IV Hanon IV Hanon system, Delta Quadrant Hanonians VOY: "Basics, Part I" Haven remastered Haven Beta Cassius Haven natives TNG: "Haven" Hemikek IV Hemikek system, Delta Quadrant VOY: "Lifesigns", "Investigations" Hetemit IX Hetemit IX SNW: "Ghosts of Illyria" Hunhau orbit Hunhau Inside Emerald Chain space as of 3189 DIS: "Scavengers" Keto-Enol Keto-Enol ENT: "Canamar" USS Enterprise at Kiley 279 Kiley 279 Kiley system Kiley SNW: "Strange New Worlds" Koinonian homeworld, remastered Koinonian homeworld Non-corporeal Koinonians and the extinct corporeal Koinonian Barren, though still class M (type 4), following the Koinonian Wars TNG: "The Bonding" Kolarus III Kolarus III Kolarin system, near the Romulan Neutral Zone Kolarans Star Trek Nemesis Cerritos at Krulmuth-B Krulmuth-B SNW: "Those Old Scientists" Kwejian Kwejian Kwejian system Kwejian Destroyed by the Dark Matter Anomaly in 3190 DIS: "The Sanctuary", "Kobayashi Maru" Kylata II Gamma Quadrant DS9: "Meridian" Lactra VII Lactra VII Alpha Quadrant Lactrans TAS: "The Eye of the Beholder" Lambda Paz Lambda Paz Orbiting Pentarus III, Pentarus system "Barely" class M as of 2367 TNG: "Final Mission" Lapeeria Lapeeria Laap system Lapeerians LD: "First First Contact" Locarno planetary data Locarno Detrion system, Alpha Quadrant Created by the detonation of a Genesis Device in 2381 LD: "Old Friends, New Planets" Lyrek Lyrek Vileen system, Beta Quadrant DIS: "Red Directive", "Under the Twin Moons" M-113 M-113 M-113 creatures TOS: "The Man Trap" Makull's species homeworld Makull's homeworld Orbiting a red dwarf, Delta Quadrant Makull's species VOY: "Time and Again" Mariposa, remastered Mariposa Ficus sector TNG: "Up The Long Ladder" Minos Korva Minos Korva system, Sector 21527, Alpha Quadrant TNG-R: "Chain Of Command, Part II" USS Enterprise orbiting Earth Two, remastered Miri FGC-347601 system, Alpha Quadrant Miri natives An exact physical duplicate of Earth with a divergent history TOS: "Miri" Hirogen star system Murder Planet Hirogen star system, Delta Quadrant Cilium-like vegetation (superorganism) PRO: "Dream Catcher", "Terror Firma" Neural Neural Neural natives TOS: "A Private Little War" Nibiru village Nibiru Nibirans Flora is red instead of the typical green Star Trek Into Darkness Noble Isle Noble Isle Romulan Neutral Zone, Beta Quadrant Possessed a turbulent atmosphere prone to ion storms, accessible only via space elevator PRO: "Masquerade" Generic brown planet Ocampa Ocampa system, Delta Quadrant Ocampans Though still habitable as of 2371, an artificial disaster millennia ago left it incapable of producing rain VOY: "Caretaker" Omicron Theta, remastered Omicron Theta Omicron Theta star system Stripped of life by the Crystalline Entity in 2338, though still class M as late as 2364 TNG: "Datalore" SS Santa Maria Orellius Orellius system, Alpha Quadrant DS9: "Paradise" Organia Organia Alpha Quadrant Organians TOS: "Errand of Mercy" Orias III Orias system, Alpha Quadrant DS9: "Defiant" Friendship 1 Otrin's homeworld Grid 310, Delta Quadrant Otrin's species Recovering from nuclear winter as of 2378 VOY: "Friendship One" USS Cayuga over Parnassus Beta Parnassus Beta Parnassus system SNW: "Hegemony" Paxan homeworld remastered Paxan homeworld Orbiting a T-Tauri type star in the Ngame Nebula A protoplanet; terraformed by the Paxans prior to 2367 TNG: "Clues" Pentarus II Pentarus system TNG: "Final Mission" Pentarus V Persephone III Persephone III Persephone system, Alpha Quadrant Deleb SNW: "Children of the Comet" USS Protostar over Planet 0042692 Planet 0042692 "Enderprizians" LD: "All the World's a Stage" Planet Hell Planet Hell Delta Quadrant Atmosphere saturated with trigemic vapors and EM disturbances VOY: "Parturition" Pollux IV, remastered Pollux IV Beta Geminorum system, Alpha Quadrant Greek gods TOS: "Who Mourns for Adonais?" Hide And Q planet set, remastered "Q's planet" Possibly an illusory world created by Q TNG: "Hide And Q" Qo'noS in 2257 Qo'noS Qo'noS system, Sector 70, Block 27, Beta Quadrant Klingons Star Trek VI: The Undiscovered Country, Star Trek Into Darkness, et al Quarra Quarra Delta Quadrant Quarren VOY: "Workforce" USS Rio Grande approaches Rakhar-Hur'q planet-Bajor Rakhar Rakhari sector, Gamma Quadrant Rakhari DS9: "Vortex" Rakosa V Rakosa V Delta Quadrant Rakosans VOY: "Dreadnought" Rigel VII graphic Rigel VII Rigel system, Alpha Quadrant Kalar TOS: "The Cage", SNW: "Among the Lotus Eaters" Ruah IV Ruah IV None TNG: "The Chase" Rubicun III remastered Rubicun III Rubicun star system, inside a star cluster Edo TNG: "Justice" Sarpeidon Sarpeidon Alpha Quadrant Sarpeidon natives Destroyed when its sun went supernova in 2269 TOS: "All Our Yesterdays" Sigma Draconis III Sigma Draconis star system, Alpha Quadrant Sigma Draconis III natives TOS: "Spock's Brain" Sigma Draconis IV Sigma Draconis IV natives Sigma Draconis VI remastered Sigma Draconis VI Sigma Draconis VI natives Talos IV, The Cage remastered Talos IV Talos system, Talos star group, Alpha Quadrant Talosians TOS: "The Cage", "The Menagerie, Part I"; DIS: "If Memory Serves" Takar, False profits Takarian homeworld Delta Quadrant Takarians VOY: "False Profits" Tamaal Tamaal A binary star system near or inside Enolian space as of 2152 ENT: "Canamar" Tarakis planet Tarakis Delta Quadrant VOY: "Memorial" Tarella Tarellians Ravaged by the Tarellian Civil War, habitability uncertain TNG: "Haven" Tarok Tarok Orbiting a gas giant planet in the Delta Quadrant VOY: "Initiations" Tarquin's planet Tarquin's planet Delphic Expanse ENT: "Exile" Taurus II remastered Taurus II Murasaki 312, three light days away from Makus III Taurus II anthropoids TOS: "The Galileo Seven" Terra 10 Terra 10 Cepheus, near Arachna Subject to natural spiroid epsilon waves TAS: "The Terratin Incident" Terra Nova planet Terra Nova Less than 20 light years from Sol ENT: "Terra Nova" Terralysium Terralysium 51,000 light years from Sol, Beta Quadrant DIS: "New Eden" Trialas IV Trialas IV Trialas system, near the Borderland ENT: "Cold Station 12" Trill planet Trill Alpha Quadrant Trills and symbionts DS9: "Equilibrium"; DIS: "Forget Me Not" Vacca VI Vacca VI Vaccan system, Cabral sector New homeworld for the Boraalans as of 2370 TNG: "Homeward" Valakis from space Valakis Alpha Quadrant Valakians and Menk ENT: "Dear Doctor" Valo I Valo I Valo system, on the outskirts of Cardassian space, Alpha Quadrant DS9: "Ensign Ro" Valo II Valo II Valo III Veridian III Veridian III Veridian system, Beta Quadrant None Star Trek Generations Veridian IV Veridian IV Veridian IV natives Vulcan, 2285 Vulcan 40 Eridani A, Vulcan system, Sector 001, Alpha Quadrant Vulcans Renamed Ni'Var as of 3189. TOS: "Amok Time", et al Vulcan Consumed by an artificial black hole in an alternate 2258 Star Trek Xahea Xahea Grid 07, Quad 09, block 3, sector 1 Xaheans ST: "Runaway"; DIS: "Such Sweet Sorrow" Xantoras Xantoras Xantoras ENT: "The Breach"
Image Name Location Indigenous sentient species Notes Source Maquis asteroid, The Maquis I Unnamed asteroid in the Badlands Badlands, Alpha Quadrant DS9: "The Maquis, Part I" Dark matter nebula planet Unnamed dark matter nebula planet Inside a dark matter nebula, located in or near Cardassian space DS9: "Rocks and Shoals" Unnamed breeding planet Used by the Gorn as a breeding planet as of 2259 SNW: "All Those Who Wander" USS Rio Grande approaches Rakhar-Hur'q planet-Bajor Unnamed Hur'q Central Museum planet Gamma Quadrant DS9: "The Sword of Kahless" Mab-Bu IV - Moon, remastered Unnamed moon of Mab-Bu VI Orbiting Mab-Bu VI, Alpha Quadrant Constantly swept by ionic cyclones and electromagnetic storms TNG: "Power Play" Allos' species moon Moon near Allos' homeworld Same star system as Allos' homeworld, orbiting an inward planet, Delta Quadrant Atmosphere extended up more than eleven thousand kilometers from the surface VOY: "The Omega Directive" Maquis planet, The Maquis II Unnamed planet used by the Maquis DS9: "The Maquis, Part II" Unnamed planet in the Delta Quadrant Delta Quadrant VOY: "Persistence of Vision" Crater, Warhead Unnamed planet in the Delta Quadrant Delta Quadrant VOY: "Warhead" Enterprise leaves orbit of planet Unnamed planet under Organian observation Home to a silicon-based virus, possibly not native to the planet ENT: "Observer Effect" Unnamed sixth planet of System J-25 System J-25 TNG: "Q Who" Rock beasts TAS Unnamed planet inhabited by rock beasts A binary star system None TAS: "Mudd's Passion" RomulanMinefield-Planet2152 Unnamed planet annexed by the Romulan Star Empire ENT: "Minefield" Unnamed planet in the Strnad solar system Strnad solar system, inside a stellar cluster TNG: "Justice" Planet (Memorial) Unnamed planet surveyed by the Delta Flyer in 2376 Delta Quadrant VOY: "Memorial" Planet (Repression) Unnamed "Federation colony" planet Delta Quadrant VOY: "Repression" Otrin's homeworld resettlement option planet Unnamed planet, a potential new homeworld for Otrin's species 132 light years from Otrin's homeworld, Delta Quadrant VOY: "Friendship One" Delta Quadrant planet, 2378 Unnamed planet, a potential new homeworld for the Talaxians Delta Quadrant VOY: "Homestead" Proposed Vaadwaur homeworld Unnamed planet, a potential new homeworld for the Vaadwaur Orbiting a G-type star in the Delta Quadrant VOY: "Dragon's Teeth" Delta Flyer crashes on an class-M planet (Once upon a time) Unnamed planetoid where the Delta Flyer crashed in 2375 Delta Quadrant Has a bemonite mantle VOY: "Once Upon a Time" Vidiian rogue planet Unnamed Vidiian planetoid Delta Quadrant A rogue planetoid; subterranean caves were class M VOY: "Phage" Multiple unnamed Terikof belt planetoids Terikof belt, Badlands, Alpha Quadrant VOY: "Caretaker" Raven crash site planet and moon Moon located in B'omar space; crash site of the USS Raven Orbiting the fifth planet in a yellow dwarf system, B'omar space, Delta Quadrant VOY: "The Raven" Class M freighter crash planet, remastered Unnamed planet, crash site of a Terellian cargo freighter Influenced by violent plasma storms TNG: "Liaisons" Chakotay in Vhnori grave Multiple asteroids in an unnamed planet's ring system Inside the ring system of a class D planet in the Delta Quadrant Class M environment likely transplanted from the Vhnori homeworld via subspace vacuoles VOY: "Emanations" Multiple planets in the Mar Oscura Nebula Mar Oscura Nebula TNG: "In Theory" Four planets in the Federation-Cardassian border area DS9: "The Maquis, Part II"
Image Name Location Indigenous sentient species Notes Source Planet 1865-Alpha 1865-Alpha Delta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 148 Teplan homeworld-Ajilon Prime Ajilon Prime Ajilon system, Beta Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 13 Harry Kim and Eudana on Alastria Alastria Alastria system, Delta Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 14 Alfa 177 remastered Alfa 177 Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 16 Amerind Amerind StarTrek.com [1](X) Amleth Prime Amleth system, Alpha Quadrant StarTrek.com [2](X) Andoria Andoria Andorian system, Alpha Quadrant Andorians, Aenars Star Trek Encyclopedia, 4th ed., vol. 1, p. 26 Angosia III, remastered Angosia III Angosians Star Trek Encyclopedia, 4th ed., vol. 1, p. 29 Antede III, remastered Antede III Antedians Star Trek Encyclopedia, 4th ed., vol. 1, p. 32 Ardana Ardana Ardana system, Beta Quadrant Ardanans Star Trek Encyclopedia, 4th ed., vol. 1, p. 42 Argelius II Argelius II Argelius system, Beta Quadrant Argelians StarTrek.com [3](X) Athos IV Athos IV Demilitarized Zone, Badlands, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 49 Atlec Omega Sagitta system, Alpha Quadrant Atlec inhabitants Star Trek Encyclopedia, 4th ed., vol. 1, p. 21 Atrea IV, remastered Atrea IV Atreans Star Trek Encyclopedia, 4th ed., vol. 1, p. 50 VOY generic planet 1 Avery III Avery system, Delta Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 53 Azati Prime planet Azati Prime Azati Prime system, Delphic Expanse, Alpha Quadrant StarTrek.com [4](X) Ba'ku planet Ba'ku Briar Patch, Sector 441, Alpha Quadrant Metaphasic radiation from the rings grants those on the surface immortality Star Trek Encyclopedia, 4th ed., vol. 1, p. 57 Bajor Bajor Bajoran system, Bajor sector, Alpha Quadrant Bajorans Star Trek Encyclopedia, 4th ed., vol. 1, p. 60 Barkon IV Barkon IV Barkonians Star Trek Encyclopedia, 4th ed., vol. 1, p. 67 Beta III remastered Beta III C-111 system Betans Star Trek Encyclopedia, 4th ed., vol. 1, p. 80 Beta XII-A remastered Beta XII-A In orbit of Beta Leonis Minoris, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 81 Beta Agni II Beta Agni II Beta Agni system Star Trek Encyclopedia, 4th ed., vol. 1, p. 80 Betazed remastered Betazed Beta Zeta system, Alpha Quadrant Betazoids Star Trek Encyclopedia, 4th ed., vol. 1, p. 81 Bilana III Bilana III Star Trek Encyclopedia, 4th ed., vol. 1, p. 83 Bopak III Bopak III Bopak system, Gamma Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 92 Brekka, remastered Brekka Delos system Brekkians StarTrek.com [5](X) Brunali homeworld Brunali homeworld Delta Quadrant Brunali Star Trek Encyclopedia, 4th ed., vol. 1, p. 108 Camor V Camor V Camor system Camorites Star Trek Encyclopedia, 4th ed., vol. 1, p. 114 Capella IV Remastered Capella IV In orbit of Capella, Alpha Quadrant Capellans Star Trek Encyclopedia, 4th ed., vol. 1, p. 115 Canopus III In orbit of Canopus, Beta Quadrant StarTrek.com [6](X) Cardassia IV Cardassia IV Cardassian system, Alpha Quadrant StarTrek.com [7](X) Celtris III Celtris III Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 126 Cheron remastered Cheron Cheron natives (extinct) Star Trek Encyclopedia, 4th ed., vol. 1, p. 137 Dakala Dakala Interstellar space Wraiths Rogue planet Star Trek Encyclopedia, 4th ed., vol. 1, p. 177 Daran V Alpha Quadrant Daran V natives StarTrek.com [8](X) Delta Vega remastered Delta Vega Near the galactic barrier, Delta Vega sector, Alpha Quadrant None Slightly smaller than Earth; Star Trek Encyclopedia, 4th ed., vol. 1, p. 201 Star Trek Encyclopedia, 4th ed., vol. 1, p. 201 Deneb IV Deneb IV Deneb system, Alpha Quadrant Bandi Star Trek Encyclopedia, 4th ed., vol. 1, p. 202 Deneva remastered Deneva Deneva system, Alpha Quadrant StarTrek.com [9](X) Denobula Denobula Triaxa system, Beta Quadrant Denobulans StarTrek.com [10](X) Dessica II, remastered Dessica II Dessica system, Beta Quadrant StarTrek.com [11](X) Devidia II, remastered Devidia II Devidia system, Marrab sector Devidians Star Trek Encyclopedia, 4th ed., vol. 1, p. 207 Dorvan V remastered Dorvan V Dorvan sector, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 216 Drayan II Drayan II Delta Quadrant Drayans Star Trek Encyclopedia, 4th ed., vol. 1, p. 219 Dreon VII Dreon system, Alpha Quadrant StarTrek.com [12](X) Ekos remastered Ekos Ekosians Star Trek Encyclopedia, 4th ed., vol. 2, p. 155 El-Adrel IV El-Adrel IV El-Adrel system StarTrek.com [13](X) Elaysian homeworld Elaysians StarTrek.com [14](X) Eminiar VII remastered Eminiar VII Eminiar system, NGC 321, Alpha Quadrant Eminians Star Trek Encyclopedia, 4th ed., vol. 1, p. 237 Enara Prime Enara Prime Delta Quadrant Enarans StarTrek.com [15](X) Epsilon Hydra VII StarTrek.com [16](X) Ferenginar, no rain Ferenginar Ferenginar system, Alpha Quadrant Ferengi Star Trek Encyclopedia, 4th ed., vol. 1, p. 269 Forlat III Star Trek Encyclopedia, 4th ed., vol. 1, p. 281 Gaia Gaia Gamma Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 290 Galen IV Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 292 Gamelan V Gamelan V Gamelan system Gamelan V natives Star Trek Encyclopedia, 4th ed., vol. 1, p. 295 Gamma Trianguli VI-1, remastered Gamma Trianguli VI Gamma Trianguli system, Gamma Trianguli sector Vaalians Star Trek Encyclopedia, 4th ed., vol. 1, p. 296 Gault StarTrek.com [17](X) Gemulon V StarTrek.com [18](X) Genesis2285 Genesis Planet Genesis sector, Mutara sector Destroyed Star Trek Encyclopedia, 4th ed., vol. 1, p. 301 Gideon Gideon Alpha Quadrant Gideon Star Trek Encyclopedia, 4th ed., vol. 1, p. 304 Golana Golana Alpha Quadrant Golanans (extinct) Star Trek Encyclopedia, 4th ed., vol. 1, p. 307 Pre warp society planet Gosis' species homeworld Gosis' species Star Trek Encyclopedia, 4th ed., vol. 1, p. 310 Grazer StarTrek.com [19](X) Hakton VII Alpha Quadrant StarTrek.com [20](X) Hansen's Planet Hansen's Planet anthropoids Star Trek Encyclopedia, 4th ed., vol. 1, p. 325 Hekaras II Hekaras sector Hekarans Star Trek Encyclopedia, 4th ed., vol. 1, p. 333 USS Rio Grande approaches Rakhar-Hur'q planet-Bajor Hur'q planet Gamma Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 352 Itamish III StarTrek.com [21](X) Jeraddo Jeraddo In orbit of Bajor, Bajoran system, Bajoran sector, Alpha Quadrant Star Trek Encyclopedia, 3rd ed., p. 222 Kaelon II remastered Kaelon II Kaelon Star Trek Encyclopedia, 4th ed., vol. 1, p. 398 Ressik on Kataan HD Kataan Kataan star system, Silarian sector Kataan natives Destroyed by solar radiation Star Trek Encyclopedia, 4th ed., vol. 1, p. 403 Kavaria Alpha Quadrant StarTrek.com [22](X) Kesprytt III, remastered Kesprytt III Kesprytt Star Trek Encyclopedia, 4th ed., vol. 1, p. 414 Khefka IV StarTrek.com [23](X) Khitomer Khitomer Khitomer system, Beta Quadrant Star Trek Encyclopedia, 4th ed., vol. 1, p. 415 Kohl settlement Kohl settlement Delta Quadrant StarTrek.com [24](X) Krios Prime 2367 Krios Prime Kriosian system, Beta Quadrant Kriosian Star Trek Encyclopedia, 4th ed., vol. 1, p. 445 L-S VI L-S VI Gamma Quadrant StarTrek.com [25](X) Ledonia III StarTrek.com [26](X) Ledos Ledos Delta Quadrant Ledosians and Ventu Star Trek Encyclopedia, 4th ed., vol. 1, p. 458 Ligon II remastered Ligon II Ligonians Star Trek Encyclopedia, 4th ed., vol. 1, p. 465 Ligobis X StarTrek.com [27](X) Lores planet Loresworld StarTrek.com [28](X) Malcor III planet remastered Malcor III Malcorians Star Trek Encyclopedia, 4th ed., vol. 2, p. 13 Maranga IV remastered Maranga IV Star Trek Encyclopedia, 4th ed., vol. 2, p. 19 Marva IV Marva IV Demilitarized Zone, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 24 Melona IV, remastered Melona IV Destroyed by Crystalline Entity; Star Trek Encyclopedia, 4th ed., vol. 2, p. 34 Merak II Merak system, Alpha Quadrant StarTrek.com [29](X) Meridian planet Meridian Trialus system, Gamma Quadrant Meridian inhabitants Star Trek Encyclopedia, 4th ed., vol. 2, p. 37 Mintaka III, remastered Mintaka III In orbit of Mintaka Mintakans Star Trek Encyclopedia, 4th ed., vol. 2, p. 44 Mordan IV, remastered Mordan IV Mordanites Star Trek Encyclopedia, 4th ed., vol. 2, p. 52 Nervala IV Nervala IV Star Trek Encyclopedia, 4th ed., vol. 2, p. 74 New Vulcan Star Trek Encyclopedia, 4th ed., vol. 2, p. 162 Nezu colony planet Nezu colony planet Delta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 80 Nimbus3 Nimbus III Neutral Zone Star Trek Encyclopedia, 4th ed., vol. 2, p. 83 Nyria III Nyrian system Star Trek Encyclopedia, 4th ed., vol. 2, p. 93 Omega IV remastered Omega IV Omega IV natives Star Trek Encyclopedia, 4th ed., vol. 2, p. 104 Omicron Ceti III remastered Omicron Ceti III In orbit of Omicron Ceti Star Trek Encyclopedia, 4th ed., vol. 2, p. 104 Paraagan II Paraagan II Destroyed by a tetrazine explosion Star Trek Encyclopedia, 4th ed., vol. 2, p. 122 Peliar Zel II remastered Peliar Zel II Peliar system, Alpha Quadrant Pelians Star Trek Encyclopedia, 4th ed., vol. 2, p. 131 Penthara IV remastered Penthara IV Star Trek Encyclopedia, 4th ed., vol. 2, p. 132 Fortress of Doom Planet X Fictional planet from The Adventures of Captain Proton Star Trek Encyclopedia, 4th ed., vol. 2, p. 148 PlatoniusRemastered Platonius Alpha Quadrant Platonians Star Trek Encyclopedia, 4th ed., vol. 2, p. 171 QuVat colony orbit Qu'Vat Beta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 192 Qualor II Qualor II Sector 213, Beta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 194 Rana IV, remastered Rana IV Delta Rana star system Destroyed by the Husnock Star Trek Encyclopedia, 4th ed., vol. 2, p. 201 Rekag-Seronia HD Rekag-Seronia Star Trek Encyclopedia, 4th ed., vol. 2, p. 212 Relva VII, remastered Relva VII StarTrek.com [30](X) Rigel IV Rigel system, Alpha Quadrant Rigel IV natives StarTrek.com [31](X) Rigel XII remastered Rigel XII Rigel system, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 222 Rinax Rinax In orbit of Talax, Talaxian system, Delta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 225 Risa Risa In orbit of Epsilon Ceti B, Alpha Quadrant Risians Star Trek Encyclopedia, 4th ed., vol. 2, p. 225 Ronara Prime Ronara Prime Demilitarized Zone, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 237 Rutia IV, remastered Rutia IV Rutians Star Trek Encyclopedia, 4th ed., vol. 2, p. 243 Scalos Scalos Alpha Quadrant Scalosians (extinct) Star Trek Encyclopedia, 4th ed., vol. 2, p. 255 Secarus IV Secarus IV Secarus system Star Trek Encyclopedia, 4th ed., vol. 2, p. 260 Sigma Iotia II remastered Sigma Iotia II Sigma Iotia system, Beta Quadrant Iotians Star Trek Encyclopedia, 4th ed., vol. 2, p. 279 Sikaris Sikaris Delta Quadrant Sikarians Star Trek Encyclopedia, 4th ed., vol. 2, p. 284 Sky Spirits' homeworld Sky Spirits' homeworld Delta Quadrant Sky Spirits StarTrek.com [32](X) Solais V, remastered Solais V Solais system Solari Star Trek Encyclopedia, 4th ed., vol. 2, p. 295 Solosos III Solosos III Demilitarized Zone, Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 296 Surata IV, remastered Surata IV Star Trek Encyclopedia, 4th ed., vol. 2, p. 346 VOY generic planet 1 Symbiogenetic alien orchid homeworld Delta Quadrant StarTrek.com [33](X) Tagra iv clean Tagra IV Tagra system, Argolis Cluster, Alpha Quadrant Tagrans StarTrek.com [34](X) Talax orbit Talax Talaxian system, Delta Quadrant Talaxians Star Trek Encyclopedia, 4th ed., vol. 2, p. 367 Tanuga IV research station Tanuga IV Tanugans Star Trek Encyclopedia, 4th ed., vol. 2, p. 371 Tarchannen III remastered Tarchannen III Tarchannen system Star Trek Encyclopedia, 4th ed., vol. 2, p. 371 Taresia Taresia Taresian system, Delta Quadrant Taresians Star Trek Encyclopedia, 4th ed., vol. 2, p. 372 Teplan homeworld-Ajilon Prime Teplan homeworld Teplan system, Gamma Quadrant Teplans StarTrek.com [35](X) Terlina III Terlina III Terlina system StarTrek.com [36](X) Tilonus IV Tilonians Star Trek Encyclopedia, 4th ed., vol. 2, p. 398 Torga IV Torga IV Gamma Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 406 Genome Colony Torman V Alpha Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 406 Torna IV Star Trek Encyclopedia, 4th ed., vol. 2, p. 167 Triacus, remastered Triacus Triacus marauders Star Trek Encyclopedia, 4th ed., vol. 2, p. 417 Triannon Triannon Muratas Star Cluster, Delphic Expanse Triannons Star Trek Encyclopedia, 4th ed., vol. 2, p. 418 Turkana IV Turkana IV Turkana system, Beta Quadrant Star Trek Encyclopedia, 4th ed., vol. 2, p. 427 Tycho IV Tycho IV Tycho system StarTrek.com [37](X) Tyree planet Tyree Star Trek Encyclopedia, 4th ed., vol. 2, p. 431 Umoth VIII Alpha Quadrant StarTrek.com [38](X) Vagra II, remastered Vagra II Zed Lapis sector Vagrans StarTrek.com [39](X) Ventax II remastered Ventax II Ventaxians Star Trek Encyclopedia, 4th ed., vol. 2, p. 455 Verdanis New home for Terra 10 colonists StarTrek.com [40](X) Volan II In orbit of Volan, Alpha Quadrant StarTrek.com [41](X) Volon III surface Volan III StarTrek.com [42](X) Vori-Kradin planet Vori homeworld Delta Quadrant Vori Star Trek Encyclopedia, 4th ed., vol. 2, p. 463 Xindi-Arboreal colony planet Xindi-Arboreal colony Delphic Expanse Star Trek Encyclopedia, 4th ed., vol. 1, p. 313 Zeon Zeon Zeons Star Trek Encyclopedia, 4th ed., vol. 2, p. 513 Mericor system planet Unnamed planet Mericor system StarTrek.com [43](X) Badlands gas giant moon Unnamed moon Badlands, Alpha Quadrant StarTrek.com [44](X) Leola root planet Unnamed planet Delta Quadrant StarTrek.com [45](X)

The novel Strangers from the Sky indicates that the term "class M" was used by Humans prior to First Contact with Vulcans, or indeed before Humanity reached any extra-solar planets.