View source for Alpha Centauri system (Myriad)

{{MyriadAlphaCentauriSystem}}
==LUG Timeline==
{{ImageInfoBox2|name=Alpha Centauri system|file=sol-st-04.jpg|caption=[[Type G star]] ([[Star Trek IV: The Voyage Home (Film)|''Star Trek IV'']])}}
{{TableRow|title=Affiliation|data=[[United Federation of Planets]]<ref name="SFTM"/>}}
{{TableRow|title=System Type|data=[[:Category:Trinary Systems|Trinary]]<ref name="STSC"/>}}
{{TableRow|title=Primary Star|data=''Name:'' Alpha Centauri A<ref name="STSC"/><br/>
''Stellar Class:'' [[Type G star|Type G2V]]<ref name="STSC"/><ref name="LUG25102"/><br/>
''Planets:''<br/>
I: [[#Inner_Planets|Doru]] ([[Class B planet|Class B]])<ref name="LUG25102"/><br/>
II: [[#Inner_Planets|Jannuik]] ([[Class B planet|Class B]])<ref name="LUG25102"/><br/>
III: [[#Inhabited_Planets|Kolmyri]] ([[Class M planet|Class M]])<ref name="LUG25102"/><br/>
IV: [[Alpha Centauri IV]] (Alpha Centauri, Centaurus) ([[Class M planet|Class M]])<ref name="LUG25102"/><ref name="TOSN28"/><br/>
V: [[#Gas_Giants|Lessai]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
VI: [[#Gas_Giants|Vagoth]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
VII: [[#Gas_Giants|Seldarian]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
VII: [[#Gas_Giants|Killner]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
IX: [[#Gas_Giants|Estavor]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
X: [[#Gas_Giants|Katanahes]] ([[Class J planet|Class J]])<ref name="LUG25102"/><br/>
XI: [[#Outer_Planets|Asephas]] ([[Class C planet|Class C]])<ref name="LUG25102"/><br/>
XII: [[#Outer_Planets|Thulann]] ([[Class B planet|Class B]])<ref name="LUG25102"/><br/>
XIII: [[#Outer_Planets|Izach]] ([[Class D planet|Class D]])<ref name="LUG25102"/><br/>
''Other Stellar Objects:'' Nebula-like cloud of gas surrounds [[#Gas_Giants|Seldarian (Alpha Centauri VII)]]<ref name="LUG25102"/>}}
{{TableRow|title=Companion Stars|data=''Name:'' Alpha Centauri B<ref name="STSC"/><br/>
''Spectral Class:'' [[Type K star|Type K3V]]<ref name="STSC"/><ref name="LUG25102"/><br/>
''Planets:'' The system's 13 planets orbit both Alpha Centauri A & B<br/><br/>
''Name:'' Proxima Centauri (Alpha Centauri C)<ref name="STSC"/><ref name="LUG25102"/><ref name="Decipher7"/><br/>
''Spectral Class:'' [[Type M star|Type M3V]]<ref name="STSC"/><ref name="LUG25102"/><br/>
''Planets:'' None}}
|}</div>
A trinary star system, Alpha Centauri is located 4.35 [[light year|light years]] from the [[Sol system]]<ref name="Decipher7"/> in the [[Alpha Centauri Sector]] (''aka'' [[Sector 002]]) of the [[Beta Quadrant]]<ref name="STSC"/> Alpha Centauri A is a [[Type G star|Type G2V (bright yellow dwarf) star]], similar to Sol, and Alpha Centauri B is a [[Type K star|Type K3V (orange dwarf) star]]. The third star, Proxima Centauri, is a [[Type M star|Type M3V (bright red dwarf) star]]. The system's thirteen planets orbit both Alpha Centauri A and B; Alpha Centauri B is too small and dim to exert much influence over the planets in the system, while Proxima Centauri is even dimmer, so far away that it is scarcely visible in the daytime skies of [[#Alpha_Centauri_IV|Alpha Centauri IV]].<ref name="Decipher7"/>

Later in life, [[warp drive]] inventor [[Cochrane, Zefram|Zefram Cochrane]] took up residence in this star system.<ref name="TOS31"/> In the future altered by the premature death of [[Bell, Gabriel|Gabriel Bell]], the lack of an [[Earth]]-fostered [[United Federation of Planets|Federation]] left the [[Romulan Star Empire|Romulans]] free to expand as far as Alpha Centauri. One of its components is [[Proxima Centauri]].<ref name="DSN457"/>

==Planets==
===Inner Planets===
[[Class B planet|Class B planets]],<ref name="STSC"/><ref name="LUG25102"/><ref name="PlanetClasses"/> Doru (Alpha Centauri I) and Jannuik (Alpha Centauri II) are unremarkable. Neither possesses an atmosphere or satellites, although the [[Centaurans]] have space stations in orbit of both for scientific research. A malfunction of the propulsion system of the Doru station in 2365 required the assistance of the [[U.S.S. Odyssey NCC-71832|U.S.S. ''Odyssey'' NCC-71832]] to prevent the station from crashing into the planet.<ref name="LUG25102"/>

===Inhabited Planets===
The third planet in the Alpha Centauri system, Kolmyri (Alpha Centauri III) was terraformed to be [[Class M planet|Class M]]<ref name="LUG25102"/> in the 23rd century.<ref name="Decipher7"/> The first successful use of the Centaurans' environmental technology, Kolmyri holds a large colony. The planet's orbit keeps it relatively close to Alpha Centauri IV,<ref name="LUG25102"/> and it has an average temperature of 26&deg;C.<ref name="Decipher7"/>

[[Alpha Centauri IV]], also known simply as Alpha Centauri<ref name="Decipher7"/> or, less commonly, as Centaurus,<ref name="TOSN28"/> is home to the [[Centaurans]], a species nearly identical to [[Humans]], save for a few minor differences in the placement of internal organs,<ref name="LUG25102"/><ref name="Decipher7"/> as well as a significant population of Human and [[Vulcans|Vulcan]] immigrants. The planet's most distinguishing celestial feature is its series of rings. The planet has two moons, [[Alpha Centauri IV#Moons|Nykos and Tharon]].<ref name="LUG25102"/>

===Gas Giants===
Alpha Centauri's fifth through tenth planets are all [[Class J planet|Class J gas giants]] of various sizes; several of their moons are home to starbases and small colonies. The planets are known as Lessai (Alpha Centauri V), Vagoth (Alpha Centauri VI), Seldarian (Alpha Centauri VII), Killner (Alpha Centauri VIII), Estavor (Alpha Centauri IX), and Katanahes (Alpha Centauri X) to the Centaurans. Seldarian suffered a major impact at some point in its history, ripping away several layers of its atmosphere. A cloud of colorful gases now surrounds the planet, and [[Starfleet Academy]] uses the cloud to train cadets for nebula operations.<ref name="LUG25102"/>

===Outer Planets===
The outer planets lay far from Alpha Centauri, at a distance equivalent to the Sol system's Kuiper Belt. The planets are known as Asephas (Alpha Centauri XI, [[Class C planet|Class C]]), Thulann (Alpha Centauri XII, [[Class B planet|Class B]]), and Izach (Alpha Centauri XIII, [[Class D planet|Class D]]).<ref name="PlanetClasses"/> Izach takes 500 years to complete one revolution around Alpha Centauri, and the discovery of raw [[dilithium]] on Thulann caused a number of free traders to scour the edges of the system in hopes of further, profitable discoveries.<ref name="LUG25102"/>
{{References}}
<references>
<ref name="SFTM">{{RefSFTM}}</ref>
<ref name="TOS31">{{RefTOS31}}</ref>
<ref name="TOSN28">[[Crisis on Centaurus (Novel)|"Crisis on Centaurus"]]. ''[[Star Trek]]'', book 28. Novel. Simon &amp; Schuster/Pocket Books, March 1986.</ref>
<ref name="DSN457">{{RefDSN457}}</ref>
<ref name="LUG25102">{{RefLUG25102}}</ref>
<ref name="STSC">{{RefSTSC}}</ref>
<ref name="Decipher7">{{RefDecipher7}}</ref>
<ref name="PlanetClasses">The [[Last Unicorn Games]] (LUG) ''Star Trek'' Roleplaying Games (1998-1999) expanded upon the planetary class designations established on screen. Classes [[Class D planet|D]], [[Class J planet|J]], [[Class L planet|L]], and [[Class M planet|M]], had previously been established, and LUG added Classes F, G, H, and K. These were, however, contradicted by the later ''[[Star Trek: Star Charts (Book)|Star Trek: Star Charts]]'' (STSC, 2002) and planetary classes listed in the LUG books have been adjusted to comply with STSC as follows: Class F is now [[Class B planet|Class B]], Class G is now [[Class C planet|Class C]], Class H is now [[Class K planet|Class K]], and Class K is now [[Class N planet|Class N]].</ref>
</references>
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