Star

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In Master of Orion there are six types of stars which each have a chance to contain different types of planets. A star can have up to five orbiting planets, including gas giants and asteroid belts. With "Balanced Start" active, a major civilization's starting system will always contain exactly two planets, regardless of star type: the homeworld (arid, desert, ocean, swamp, or volcanic depending on racial traits, or terran by default), and while the other will be either a gas giant or an asteroid field. Independent civilizations on the other hand always have starting systems with colonizable planets, allowing major races to settle there and incorporate them as a protectorate of their empire.

Interstellar travel is possible in three ways:

  • Blue warp lanes: connecting two stable warp points, they are accessible since the start of the game (unless a "pre-warp" start was selected).
  • Red warp lanes: connecting to unstable warp points, they are accessible only after researching electromagnetic refraction to obtain the multistate insulator.
  • Jump gates: accessible after researching gravitic fields and building them in a colonized system with a space factory. Your ships can travel freely between any two jump gates under your control.

Star types[edit | edit source]

Star Image Description
Blue-White Star
Banner STAR TYPE BLUE WHITE.png
These are the hottest stars, making it extremely difficult to find habitable planets around them. Their planets are mineral rich though.
White Star
Banner STAR TYPE WHITE.png
Young stars that have mineral rich planets but are barely able to support life.
Yellow Star
Banner STAR TYPE YELLOW.png
Average stars that often have moderate mineral resources and tolerance to life.
Orange Star
Banner STAR TYPE ORANGE.png
These stars are always orbited by planets that can support life but are poor in minerals.
Red Star
Banner STAR TYPE RED.png
Few planets form around these stars, and those that do rarely have mineral resources or habitable environments.
Brown Star
Banner STAR TYPE BROWN.png
These extremely rare stars usually host no planets at all, and those that do rarely have habitable environments.
Antaran Portal
Banner STAR TYPE ANTARAN PORTAL.png
A portal to the Antaran Dimension
Wormhole
Banner STAR TYPE BLACK HOLE.png
A wormhole bends time and space, allowing ships to travel instantaneously between its two ends.

Star systems[edit | edit source]

The type of star determines both how many planets it can have and how mineral rich they are. The planet biomes, however, depend on star type and galaxy age.

Planet Richness Chance
Star Class Ultra-Poor Poor Abundant Rich Ultra-Rich
Blue-White 0% 0% 30% 40% 30%
White 0% 9% 34% 36% 21%
Yellow 10% 29% 39% 14% 8%
Orange 16% 39% 36% 8% 1%
Red 20% 33% 46% 1% 0%
Brown 10% 34% 35% 16% 5%

Although technically each star type has its own statistics for number of planets and chances of them appearing in any orbit; in practice all types except brown stars use the same statistics.

Planet Amount Chance
Star Class 0 1 2 3 4 5
Non-Brown 4% 18% 28% 29% 15% 6%
Brown 35% 50% 10% 4% 1% 0%
Orbit 1 Orbit 2 Orbit 3 Orbit 4 Orbit 5
Star Class Plnt Astr Gnt Plnt Astr Gnt Plnt Astr Gnt Plnt Astr Gnt Plnt Astr Gnt
Non-Brown 20% 0% 0% 35% 0% 0% 45% 0% 0% 65% 20% 15% 65% 15% 20%
Brown 20% 0% 0% 20% 0% 0% 20% 10% 0% 65% 20% 15% 65% 15% 20%


Names[edit | edit source]

Star systems serving as the starting homeworld of a civilization always have a specific name. Other star systems are named from lists of star names for each star type. This means that, for example, Sol will always be the homeworld of the Human Republic, but it will not always be a yellow star. Inversely, Aldebaran will always be a yellow star, but it will only shelter a civilization if it has been colonized during the game. Uninhabited systems may be generated with a space monster, or serve as a base for space pirates.

Civilized systems[edit | edit source]

Star Name Civilization Civilization Type
Alpha Ceti Terran Khanate Major
Altair Alkari Flock Major
Ban-el-Akir Akirian Diarchy Independent
Cryslon Silicoids Crag Major
Degon Degonite Kritarchy Independent
Draconis Elerian Fiefdoms Major
Fieras Mrrshan Pride Major
Gly Glis Nomocracy Independent
Gnol Gnolam League Major
Kholdan Klackon Hive Major
Meklon Meklar Combine Major
Mentar Psilon Quanta Major
Nazin Darlok Cabal Major
Nyemor Nyemorian Magocracy Independent
Nyu Nyunyu Sortition Independent
Orion Orion Elder
Sol Human Republic Major
Sssla Sakkra Brood Major
Tetchys Eldritch Anocracy Independent
Thersonia Thersonian Timocracy Independent
Trilar Trilarian Shoal Major
Ursa Bulrathi Empire Major
Yar-ssan Yar-ssian Autocracy Independent
Zarkonia Zarkonian Chiefdom Independent

Uninhabited systems[edit | edit source]

Blue-White White Yellow Orange Red Brown
Abbith Abeen Acamar Achir Actaeus Adenin
Adib Ajax Ajieh Akrab Alacast Alaozar
Alar Alcor Aldebaran Alepha Algeiba Algol
Alpha Alphar Anchat Andromeda Anraq Anraqo
Antarktos Aquilae Aran Arcturus Argus Argusmi
Arietis Arkab Arkham Arlyehm Aroch Artemis
Ascellus Asterion Atari Atsui Audax Aurora
Avellar Axion Ayil Azimon Baalbo Baaltis
Babylon Bagdei Baham Balik Barcada Barvra
Benat Berel Bestia Beta Beta Ceti Bethmoora
Bieron Biots Birdon Blucher Bogina Boloe
Bootes Bootis Borea Boshi Brachium Browntes
Brutum Bubulus Buemis Bulanen Bunda Bungula
Burin Bussola Butain Cabrilla Cadmus Caeleb
Callisto Camelus Canis Canopus Capella Caphria
Carcosa Carinax Castor Cathuria Ceginus Celaeno
Celephais Celox Celtsi Celtsig Centauri Cephee
Cerva Ceti Cetuse Charon Chay Chelae
Chiba Ching Choom Chorazin Chort Cimmeria
Collassa Collassam Commoriom Concordia Corbeau Corolla
Corona Corvus Cressas Crius Croix Croth
Crux Crypto Cryptos Cursa Cygni Dabanel
Dagon Damea Dannu Dante Darrian Dauphin
Degiri Deli Delta Demhe Dendo Denebk
Denubius Derke Desmos Dhira Diab Dilfim
Dilgan Distaff Dolz Dolza Dorado Draco
Drakka Dramasa Dromos Drossel Dumke Dunatis
Dunwich Ecber Echidna Ecuar Einhorn Elcorno
Electra Elkisus Ellq Elvarad Elysia Endoria
Enoch Ensis Enzu Epsilon Ercole Eridanus
Erigone Erosria Erulus Escalon Esper Etana
Exisko Exisuri Ezore Ezra Faelis Fafnir
Fahde Fakar Fascia Felis Ferassa Fides
Finnau Firma Fische Fixas Fluvius Fomalhaut
Foo Fortuna Fovea Frere Fullen Fundusm
Fuseki Gabbar Gadjoa Galapago Galileo Galos
Gamma Gammaon Gatto Gazelle Gehenna Gemat
Genam Geodesy Geph Getaa Ghamus Gharne
Ghavs Gibber Gienaho Gigas Gion Girtab
Gladius Go Goi Gontzol Gorgonis Gorra
Gote Grumium Grusna Gryphon Guad Gularn
Guradas Guradask Gurion Habor Hadar Hadramaut
Hague Haliia Hally Hamete Hammis Hanekomi
Hapbo Hapion Harag Hasami Hasenus Hastur
Hawking Hayk Helios Helos Hera Heracles
Herculis Hermidon Herschel Hewel Hindea Hiraki
Hircus Hontes Horne Horus Hoshi Huttis
Hyades Hyboria Hydrae Hyperborea Ibis Icarus
Ilya Immaus Imra Inakda Inari Incedius
Indus Inganok Invaka Iranhai Iras Iremoora
Irra Ishi Ishtar Ivielda Ixion Izara
Jabbar Jabos Jacob Jaculum Janib Jataka
Jinga Jobetes Jordanus Joseki Joshua Juga
Jugum Juka Justaa Juzala Kadath Kaes
Kaff Kahtn Kailis Kakari Kakata Kakes
Kalbla Kalib Katab Keats Keeta Kelev
Khrissa Khumba Kif Kit Kled Kluhn
Klystron Knaaa Knyan Kochba Kolath Komius
Komokun Kosumi Kothhais Krakena Krebs Kronos
Ktyngae Kulthos Kyusho Laan Laann Lacerta
Ladon Laius Lamash Laniger Larx Lawdon
Lemuria Lengzin Leonids Lepus Lerion Lesath
Leviathan Lince Linxrdia Lirr Lomar Lonela
Loraa Lupus Luraa Lurnis Lyae Lycaon
Lyra Maalor Maazo Madira Madorla Magaria
Magdalen Magi Magnus Mahu Malecaut Malusa
Mane Manica Manzil Maretta Marindi Mariner
Markab Matar Media Menalo Menita Mensa
Merope Mihr Milaff Minerva Minra Miract
Mirak Miranda Mirror Mirza Misha Mishay
Mithras Mizar Mobas Mochos Monius Monkar
Monstrum Montone Moro Moroch Morrig Moyosto
Mu Delphi Mulano Mulban Mulubat Munic Muru
Musator Muscida Mutatrix Mutlat Naam Nagar
Naosus Narnla Nasak Nathsa Necht Nekkar
Nephthys Neptunus Nessusm Niallar Nilusis Nimbus
Ninsar Niphla Nirb Niru Nisusm Nitzer
Nobi Noctuan Nordia Nordiaj Nortes Notonn
Nubilium Numinos Nyarlg Obaca Obacas Obarion
Obelus Oberona Octipes Oculus Ogeima Ogka
Okabi Okda Okitis Olathoe Olor Olorunnis
Omega Omicron Oomaius Opuss Orbis Orflar
Oriab Origen Orloge Osae Oshiad Osiris
Otawa Ovillus Padus Paladia Paladiaus Palaemon
Pandora Panthera Paradise Paranar Parmag Passer
Patera Pavo Pavoner Paxn Pegasus Pelenor
Perenis Perizoma Pernus Perseas Perseo Pesci
Phakt Phantos Pharmaz Phecca Pherd Phobeus
Phoenix Phyco Piatuos Pictor Pindarma Pipiri
Pistrix Plastrum Pleides Plinyorea Poculum Polarion
Polaris Pollus Pollux Pomptina Ponnuki Porrima
Poseidonis Praxis Priapus Primodius Proclus Proctor
Procyon Proditor Profugus Propus Proteus Proxima
Psi Ptolemy Pund Pythones Qablu Qatar
Quadrupes Quandra Quayal Quek Quercia Quiurus
Rabe Radiff Rahab Ramad Ramono Rana
Ras Ravm Rayden Rebarus Regulus Remus
Reticuli Revati Rex Rha Rhai Rheael
Rhilus Rhombus Rialsa Ribat Rigel Risabam
Rishka Riwand Rlyeh Rochi Romulas Rosaan
Rosemund Rotan Rubariom Rukubi Rutilicus Ruzam
Ryoun Saak Sabaki Sabazius Sabik Sadakon
Sadr Saganes Sagitta Sahil Sahu Saiph
Saliba Saltator Samson San Sanomeda Sarfah
Sargon Sarkomand Sarnathi Sarti Sarwa Satyraut
Saxon Scaliger Scera Scheader Scheat Schiff
Schwan Scorpio Scutulums Segel Seginus Seidon
Seki Selia Selial Sella Semeai Sentes
Septumi Serapis Serpens Shaghar Shalako Sharru
Shatr Shen Shicho Shihm Shimari Shinogi
Shira Shwing Siktut Simak Simius Sirus
Situla Skaio Slkima Smon Sonans Souchis
Spica Stalaz Statius Steinbok Stellio Suji
Sukra Sulcus Sung Sutuls Suud Syntaxis
Syrius Tabena Tahon Tain Tais Takamoku
Talas Tali Tambiru Tammech Tantalus Tao
Taoast Tarandus Tarazad Tarcuta Tatiana Tau
Tau Cygni Tauri Taurio Taurus Tejat Telum
Templum Tenuki Tericas Testa Tesuji Tewari
Thales Thaur Thesbia Thiba Thog Thok
Thoth Thraa Thrax Thraxr Thuban Thuggon
Tiam Tigrisd Tindalos Tinnan Tirstar Tome
Tonds Toranor Tormantius Trax Trethon Trifid
Trigon Torino Tripton Tristan Tsangs Tsath
Tsugi Triones Tucana Tukan Turrktos Tycho
Tyr Tsuke Tyrei Tyriusus Ubarn Ubboth
Udarapha Tyrannus Ukko Ulgher Ulthar Ummllus
Ungal Udha Urania Urflae Urkab Urnar
Ursulas Unuklla Ussika Uxmai Uzith Vagnium
Vane Ursus Valusia Varak Vardi Varinia
Vector Valkyr Vegaer Velan Veneris Vespam
Vhoorl Vega Virgil Virgoa Vitruvious Volans
Volantis Vijzar Vox Voxh Vulcan Vuples
Waage Voore Waghi Wagi Wain Warikomi
Wasat Wabir Wegat Weilon Wesatgo Wesen
Whynil Wazna Willow Wirius Wolf Wool
Woza Wilderr Xeen Xendalla Xengara Xenona
Xiclotl Xanthus Xolas Xoth Xudax Yadb
Yaddith Xiphias Yarrow Yedeus Yekubi Yenbaran
Yher Yarak Yifnehan Yildum Ymarne Ynarl
Yothis Yian Yuzh Zaban Zak Zaman
Zaniah Yueh Zarijan Zaurak Zenithnd Zeraha
Zhadoom Zaoth Zibam Zibbat Zichos Zin
Zinge Zhardan Zirrff Zobna Zoctan Zonaus
Zosma Zirkel Zubana Zubrahr Zweig Zota
Zothique