Editing Sector

[[File:Comp-Prog-Dav-R-Deitrick-Starter-Trav-Page-16 16-July-2018a.jpg|right]]
A [[Sector]] is a astrophysical co-ordinate system applied to [[Charted Space]]. 
* A sector is part of a [[Domain]] within the [[Third Imperium|Imperium]], and contains [[Subsector|subsectors]].

== Description ([[Specifications]]) ==
Mapping unit in astrography equal to sixteen subsectors. 
* Typical density 350 to 650 worlds per sector.

=== Sector Nomenclature ===
Sectors are named, and several synonyms are in common use, including: 
* March (or marches), 
* Region, 
* Reach (or reaches), 
* Quadrant, and 
* Matrix. 

e.g. The [[Spinward Marches Sector|Spinward Marches]], for example, is a sector.

=== Sector Quadrants ===
While not enforced, the IISS has been using a system of quadrants (four [[subsector]]s each) to further subdivide  astrographic sectors. Terran Greek lettering are used to mark these quadrants: Alpha, Beta, Delta, and Gamma.

This terminology was developed after many of the core sectors of the Third Imperium were already established and in these areas, it is far more common to hear subsectors referred to by their associated [[duchy]].

== History & Background ([[Dossier]]) ==
The mighty [[Ziru Sirka]] originated the sector astrography system. As a giant interstellar empire considerably more advanced than its neighbors, it conquered much of Charted Space. What the Romans are to Terran history is what the ancient Vilani are to the history of Charted Space. 

They came, saw, and conquered. And their subjective partitions of space became the standards for [[astrography]]. When non-Vilani traders adopted the system, it truly became cemented as the most widely adopted system of interstellar astrography used within Charted Space. 

Not all interstellar polities use the Vilani sector system... internally, but they all provide traders with sector compatible star charts to facilitate trade. Even some of the newest races to Charted Space have quickly adopted the system. Profit is a powerful motivator. Even the Terrans who conquered the Ziru Sirka were forced to adopt this Vilani astrographic adaptation.  

=== Charted Space Overview ===
As a rough means of comparing size, the sector counts of the large interstellar states and areas of settlement are: 

:{| class="wikitable sortable" 
|+ Sectors of the Major Races in [[Charted Space]]
|-
! Polity (Government)
! Society (People)
! Sectors
! Remarks
|-
| [[Third Imperium]]
| Imperial & [[Vilani]]
| 19
| None
|-
| [[Aslan Hierate]]
| [[Aslan]]
| 15
| None
|-
| [[Hive Federation]]
| [[Hiver]]
| 11
| None
|-
| [[Two Thousand Worlds]]
| [[K'kree]]
| 09
| None
|-
| [[Vargr Extents]]
| [[Vargr]]
| 09
| None
|-
| [[Zhodani Consulate]]
| [[Zhodani]] [[Humaniti]]
| 08
| None
|-
| [[Solomani Confederation]]
| [[Solomani]] [[Humaniti]]
| 05
| None
|-
| [[Droyne Oytrip Yatroy (Polity)|Droyne Oytrip Yatroy]]
| [[Droyne]]
| Interspersed
| None
|}

'''Notes:'''
* Several sectors are known by other names (by non-imperial races). Strangely enough they use the same co-ordinate system. 
* The earliest known use of the term sector was among the [[Vilani]], who used a slightly smaller '[[parsec]]', compared to the current, Solomani-derived parsec.
* The library refers to all sectors with the word '''Sector''', thus '''Riftspan Reaches''', or '''Dark Nebula''' are known as [[Riftspan Reaches Sector]] or [[Dark Nebula Sector]] in Library Entries even though the former name is used in normal discussion.

Please see [[Sector Map]] and [[Sectors]] for an alphabetical listing of all sectors, and alien toponyms (names) for those sectors.

=== Charted Space Table ===
The following table lists the Sectors near the {{Imperium}}; see articles on the other empires for sectors in their Domains, and [[Subsector Map]] for a map of allegiances by subsector.

{| border="1"
|+ Sectors Near the Imperium
|-
!
! -5
! -4 
! -3 
! -2 
! -1 
! 0 
! 1 
! 2 
! 3
|-
! 2
| style="color: #000; background-color: #{{Allegiance colors|Zh}}" | [[Ziafrplians Sector|Ziafrplians]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Gvurrdon Sector|Gvurrdon]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Tuglikki Sector|Tuglikki]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Provence Sector|Provence]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Windhorn Sector|Windhorn]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Meshan Sector|Meshan]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Mendan Sector|Mendan]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Amdukan Sector|Amdukan]]
| style="color: #000; background-color: #{{Allegiance colors|Va}}" | [[Arzul Sector|Arzul]]
|-
! 1
| style="color: #000; background-color: #{{Allegiance colors|Zh}}" | [[Foreven Sector|Foreven]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Spinward Marches Sector|Spinward Marches]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Deneb Sector|Deneb]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Corridor Sector|Corridor]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Vland Sector|Vland]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Lishun Sector|Lishun]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Antares Sector|Antares]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Empty Quarter Sector|Empty Quarter]]
| [[Stars End Sector|Stars End]]
|-
! 0
| [[The Beyond Sector|The Beyond]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Trojan Reaches Sector|Trojan Reaches]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Reft Sector|Reft]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Gushemege Sector|Gushemege]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Dagudashaag Sector|Dagudashaag]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Core Sector|Core]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Fornast Sector|Fornast]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Ley Sector|Ley]]
| [[Gateway Sector|Gateway]]
|-
! -1
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Touchstone Sector|Touchstone]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Riftspan Reaches Sector|Riftspan Reaches]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Verge Sector|Verge]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Ilelish Sector|Ilelish]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Zarushagar Sector|Zarushagar]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Massilia Sector|Massilia]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Delphi Sector|Delphi]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Glimmerdrift Reaches Sector|Glimmerdrift Reaches]]
| [[Crucis Margin Sector|Crucis Margin]]
|-
! -2
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Afawahisa Sector|Afawahisa]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Hlakhoi Sector|Hlakhoi]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Ealiyasiyw Sector|Ealiyasiyw]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Reaver's Deep Sector|Reaver's Deep]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Daibei Sector|Daibei]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Diaspora Sector|Diaspora]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Old Expanses Sector|Old Expanses]]
| [[Hinterworlds Sector|Hinterworlds]]
| [[Leonidae Sector|Leonidae]]
|-
! -3
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Karleaya Sector|Karleaya]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Staihaia'yo Sector|Staihaia'yo]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Iwahfuah Sector|Iwahfuah]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Dark Nebula Sector|Dark Nebula]]
| style="color: #000; background-color: #{{Allegiance colors|So}}" | [[Magyar Sector|Magyar]]
| style="color: #000; background-color: #{{Allegiance colors|Im}}" | [[Solomani Rim Sector|Solomani Rim]]
| style="color: #000; background-color: #{{Allegiance colors|So}}" | [[Alpha Crucis Sector|Alpha Crucis]]
| style="color: #000; background-color: #{{Allegiance colors|Hv}}" | [[Spica Sector|Spica]]
| style="color: #000; background-color: #{{Allegiance colors|Hv}}" | [[Phlask Sector|Phlask]]
|-
! -4
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Etakhasoa Sector|Etakhasoa]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Aktifao Sector|Aktifao]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Uistilrao Sector|Uistilrao]]
| style="color: #000; background-color: #{{Allegiance colors|As}}" | [[Ustral Quadrant Sector|Ustral Quadrant]]
| style="color: #000; background-color: #{{Allegiance colors|So}}" | [[Canopus Sector|Canopus]]
| style="color: #000; background-color: #{{Allegiance colors|So}}" | [[Aldebaran Sector|Aldebaran]]
| style="color: #000; background-color: #{{Allegiance colors|So}}" | [[Neworld Sector|Neworld]]
| style="color: #000; background-color: #{{Allegiance colors|Hv}}" | [[Langere Sector|Langere]]
| style="color: #000; background-color: #{{Allegiance colors|Hv}}" | [[Drakken Sector|Drakken]]
|}

The following key helps to explain the [[Charted Space]] Table:
* Red (Pink) Sectors are Mostly Imperial-Controlled 
* Yellow [[Aslan Hierate|Aslan]] 
* Green [[Vargr Extents|Vargr]] 
* Purple [[Hive Federation|Hiver]] 
* Orange [[Solomani Confederation|Solomani]] 
* Blue [[Zhodani Consulate|Zhodani]]
* Clear (Balkanized Space) [No major polity and/or dominant polity]

== References & Contributors (Sources) ==
{{Advanced}}
{{Sources
|S1= [[Classic Traveller]] [[Beltstrike]]
|S2= [[Classic Traveller]] [[The Traveller Book]]
|S3= [[MegaTraveller]] [[Vilani & Vargr]]
|S4= {{Ludography cite|name= Marc Miller's Traveller |page= 186}}
|S5= EXTERNAL LINK: [https://web.archive.org/web/20160313121509/http://dmckinne.winterwar.org/sector.html Don McKinney's Sector Sources] (Last updated in 2009)
|S6= [[Traveller Wiki Editorial Team]]
|S7= Author & Contributor: Lord (Marquis) and Master of Sophontology [[User:Maksim-Smelchak|Maksim-Smelchak]] of the [[Ministry of Science]] 
}}


{{LE|Astrography|Metric}}