Theta Borealis Sector

Theta Borealis Sector
Mavuzog Astron Theron Theta Borealis style="width: 250px; height: 350px; border: solid 1px black;" map from Travellermap.com Khaeaw
Subsectors
Alpha Festab Monway Banderhue Evalren Corelian Phoenix Sibigil Anguilla Persiphus Ventura (Theta Borealis) Duhamel Trasfalca Borealis Kantel Jauhaux Bengalaz
Sector Data
No. of Worlds	406
Population	869,829 million
Majority Control	Non-Aligned, Human - 77%
Secondary Control	Korsumug Empire - 8%
Tertiary Control	Trooles Confederation - 5%
Quaternary Control	Percavid Marches - 4%
Quiniary Control	Kingdom of Peladon - 3%
Sextenary Control	Non-Aligned, unclaimed - 3%
Septenary Control	Imperial Client States - 0%
Province	Balkanized Space
Capital	Various
Gross Sector Product	BCr2,387,633
Trade Volume	BCr2,161
Imperial Coordinate	-8 / -1
This sector has a trade map
This sector has economic data
This sector has sector data
This sector has a climate file
This sector has sector data
Theta Borealis style="width: 250px; height: 350px; border: solid 1px black; float: right; clear: left"

Theta Borealis Sector lies far to spinward of the Third Imperium. It is a region of Balkanized Space that has been inhabited for millennia.

• It is part of Charted Space.
• It is named for Theta Borealis, a supergiant star lying close to its center and visible across the region.
• The occasional Zhodani, Aslan, or Imperial trader ventures to its rich, exotic worlds, eager to make themselves a fortune.

Description (Specifications)

Theta Borealis Sector is a relatively densely populated sector in a largely empty region of space.

• It is a remote, isolated, inward-looking area surrounded by wide rifts.
• Though it has a large human population it is dominated by non-human sophonts.
• The resources of the sector are being exploited.

Astrographic Features & Trade Routes

The following astrographic and commercial data regarding the sector has been determined:

• Most of the sector is considered lower or standard stellar density: parts of its coreward and trailing regions are rift density.
• It lies directly to coreward of the Great Rift.
• The brightest star in the sector is the blue-white supergiant Theta Borealis. It is the namesake of the sector.
• The most important trade routes within the region are the Korsumug Main and the Dennson Main.
• The most heavily populated areas are the Verstand-Jugartha Colonies, lying to trailing-rimward.

The sector was initially surveyed during the Imperial First Survey.

• First Survey primary data on the sector was very fragmented.

The sector was extensively surveyed during the Imperial Second Survey.

• A few IISS personnel, based at Pautho, were able to personally gather limited amounts of data at great personal risk.
  We salute their valor and honor the fallen.
• Much of the updated data relating to the sector was based on remote long-term observations done over approximately 70 years (from 995 to 1065).
• Most of the output from these observations was automatically collated and generated and may occasionally contain errors.

Stellar Distribution

A basic map showing the distribution and size of stars within Theta Borealis Sector.

• The color corresponds to the visible color of the star, which links to its spectral classification.
• The size as shown indicates both the physical size of the object and its relative brightness.

(Chart sourced from Traveller Map).

Note that the stars as depicted are representative. Any star, no matter what its size, is a mere speck within the hex it occupies.

• Ordinary main sequence stars can barely be seen from even a hex away.
• Huge, intensely luminous giant stars can be seen from across the sector and far beyond.

Rifts & Voids

A simple chart showing rift regions within Theta Borealis Sector.

(Chart sourced from Traveller Map)

The highest tech level commonly encountered out This Far Along (spinward of the Third Imperium) is TL–12, though a few worlds are more advanced.

• This level of technology allows the routine use of up to Jump-3 drives.
• Traditionally, areas that cannot be routinely crossed by Jump-3-capable vessels are denoted as rift regions.

The various rift regions within the sector have been named.

• The Thetan Rift is located within the spinward-coreward part of the Sector. It is composed of two separate regions, the Thetan Rift proper and the smaller Zephor Void.
• The Thetan Void lies within the coreward-trailing part of the sector.

The rimward edge of the sector lies adjacent to the Great Rift, the great expanse of empty space dividing the Imperial core from those regions lying "Behind the Claw".

• It is a vast impassable barrier.
• It is studded with space-time anomalies.

The Idella Rift

The scattered rift regions that lie within Theta Borealis Sector are part of a huge complex of rifts and voids running generally parallel to the coreward edge of the Great Rift.

• They are collectively referred to as the Idella Rift, despite that rift being an astrographic feature in its own right.
• The rifts appear to be closely associated with the Borealis Group, a huge spiral of giant stars centered on the supergiant Theta Borealis.

(Chart sourced from Traveller Map)

• Theta Borealis is marked in red.

Borealis Group

Theta Borealis Sector is dominated by the Borealis Group, a very large cluster of stars containing an unusually high number of stellar giants.

• It is an astrographic feature visible across the whole of Charted Space.
• It is centered on the supergiant star Theta Borealis.
• The cluster lies close to the coreward edge of the Great Rift.

(Chart sourced from Traveller Map)

Significant Stars
The brightest stars in the group are called the Borealean Stars. They include:

• Theta Borealis: A7 Ia Supergiant, Luminosity: 73,000 sols.
• Sigma Borealis: M9 II Bright Giant, Luminosity: 16,200 sols.
• Tau Borealis: M9 II Bright Giant, Luminosity: 16,200 sols.
• Epsilon Borealis: M7 II Bright Giant, Luminosity: 15,550 sols.
• Zeta Borealis: M5 II Bright Giant, Luminosity: 14,900 sols.
• Mu Borealis: M5 II Bright Giant, Luminosity: 14,900 sols.
• Kappa Borealis: A3 Ib Supergiant, Luminosity: 13,000 sols.

The major stars of the cluster are surrounded by more than sixty other giant and subgiant stars, some almost as bright as the named giants, as well as numerous main sequence stars and white dwarfs.

• The cluster has higher than normal concentrations of gas and dust within it, largely consisting of material thrown off by the stars.
• This gas and dust reflects the intense light of the stars and gives the vast feature a diffuse glow.

The skies within the region are spectacular. Some of the brighter stars can be seen from the surfaces of worlds during daylight hours.

Many of the stars are active objects, experiencing violent flare activity and producing a lot of EM noise across the spectrum.

• The background interference is significant - sensor operations and communications can be seriously hampered by signals originating parsecs away.
  • Levels of interference vary periodically.
• Areas of the cluster may contain clouds of matter thrown off by stellar activity.
• Radiation Levels may be significantly raised on worlds within the cluster.

Many of these gigantic, turbulent stars are destinations on the Korsumug Main.

Uncharted Anomaly

The "Enigma of Theta Borealis" is a mysterious astrographic feature.

• It is believed to be an uncharted space-time anomaly
• Its precise location, nature, and characteristics remain unknown.
  • It is believed to lie across parts of Monway Subsector and Banderhue Subsector.

World Listings

Comprehensive Second Survey UWP data for all worlds lying within Theta Borealis Sector is available.

• The primary source material for all data is Traveller Map.
• Other sources may differ: some elements of the data may be contradictory or incorrect.
• Data is occasionally updated as new information becomes available.
• Scouting missions gathering reliable, verified data can receive substantial payment.

408 Worlds in the Theta Borealis Sector

Abemire  •  Accasion  •  Acheson  •  Alanbrooke  •  Alcadeen  •  Alonion  •  Amberlite  •  Ames (TB 3224)  •  Amethyst  •  Amnok  •  Andizan  •  Anoreg  •  Antares (TB 0104)  •  Apraksin  •  Apratib  •  Apsheron  •  Artemis  •    •  Aster (TB 0538)  •  Attaray  •  Barbusse  •  Barenta  •  Bartillion  •  Basgem  •  Bernode  •  Betuatan  •  Bilow  •  Bilsham  •  Binikin  •  Bisak  •  Borlinden  •  Bortesi  •  Boswool  •  Brasov  •  Brekot  •  Broats  •  Bur'vr'di'klr  •  Burning Sty  •  Bytholm  •  Cabbot  •  Cabon  •  Caloran (TB 1122)  •  Canbridel  •  Candankst  •  Candri  •  Carlondo  •  Carmello  •  Carnoff  •  Carug  •  Catania (TB 1331)  •  Caxel  •  Cayme  •  Chang-Su  •    •  Chanshonie  •  Chao Kwan  •  Chevoit  •  Chinampo  •  Cimmeron  •  Coalsand  •  Cobra III  •  Colophon  •  Conacus  •  Constantine (TB 1132)  •  Corbad  •  Corcoran (TB 2837)  •  Cordoba (TB 2601)  •  Corelia  •  Creoll  •  Crexel  •  Crompton  •  Crows Nest  •  Cugleb  •  Dalain  •  Daloil  •  Dalzer  •  Darwald  •  DeHan V  •  Deckert  •  Dedas  •  Deitance  •  Delburt  •  Delsdor  •  Demest  •  Dennson  •  Des Prez  •  Devalera  •  Dilvart  •  Dinian  •  Dinloc  •  Dunedin  •  Dutan  •  Easton  •  Edgel  •  Edhoda  •  Eggart  •  Eldorado  •    •  Eltonia  •  Epsilon VIII  •  Erikson  •  Erwind  •  Eylyre  •  Falbin  •  Falcon  •  Falmout  •  Farbel  •  Farkon  •  Farragut  •  Feleg  •  Ferropas  •  Fesnay  •  Fesnay  •  Floodgate  •  Fonway  •  Forgald  •  Freyvaud  •  Futburg  •  Futrick  •  Gadil  •  Gadmoth  •  Gadwop  •  Galores  •  Ganados  •  Gangarova  •  Garatol  •  Gauntlet Run  •  Gaxfield  •  Geptorem  •  Gibroat  •  Gontip  •  Gormsby  •  Gothaburg  •  Grand Harbour  •  Granian  •  Grunden  •  Guanalade  •  Gurgan  •  Gurn  •  Gutzkow  •  Hacany  •  Hartman  •  Heamon  •  Hertansi  •  Hesten  •  Hetage  •  Hevad  •  Hhurster  •  Hickos  •  Higram  •  Hocdef  •  Honflair  •  Honiara  •  Hounslow  •  Hufkin  •  Huflink  •  Hupland  •  Hydraotes  •  Hydronaut  •  Idbar  •  Ijesmul  •  Illimani  •  Ilnoyor  •  Imetcon  •  Inbarin  •  Indmaea  •  Isabit  •  Isbelra  •  Iskender  •  Itenez  •  Ivorholm  •  Jabaran  •  Jaches  •  Jairbax  •  Jalafum  •  Jamison II  •  Jasmire  •  Jebol  •  Jeilif  •  Jelmirt  •  Jirk  •  Jugartha  •  Jyhala  •  Kalsop  •  Kanell  •  Kansel  •  Kantrim  •  Kanuel  •  Kapalon  •  Kathol  •  Katzebue  •  Keros  •  Kerpan  •  Kersian  •  Kirwan  •  Kline (TB 0433)  •  Kolenat  •  Kolhapur  •  Kormap  •  Krytolon  •  Kuclaron  •  Kullen  •  Lacdor  •  Lagel  •  Lamburel  •  Landfair  •  Langley (Tn 1016)  •  Laurens  •  Lerrish  •  LesParda  •  Lexaria  •  Logos Belt  •  Lomodo IVA   •  Lonach  •  Lone Star (TB 2428)  •  Long Chase  •  Lothain  •  Luxandra  •  Lycrew  •  Lytock  •  Lywyn  •  Magnar  •  Magpie  •  Makatea  •  Malifant  •  Malvord  •  Mandau  •  Manlowe  •    •  Mapendal  •  Marconi  •  Marinagua  •  Marjanet  •  Marnio  •  McLuhan  •  Medkin  •  Melham  •  Merotpeg  •  Moliska  •  Montserat  •  Mosule  •  Motobab  •  Mrunkil  •  Muravia  •  Murtaskin  •  Mytelon  •  Naksel  •  Naleput  •  Nalmer  •  Nasany  •  Nauvoo  •  Nedric  •    •  Nervay  •  New Caladonia  •  Nexur  •  Nezal  •  Ninumbra  •  Niparoo  •  Nithus  •  Nouwak  •  Nunivak  •  Nystalux  •  Obaroth  •  Obysan  •  Oceania  •  Olack  •  Olikunz  •  Oriniab  •  Orr  •  Ostello  •  Oujda  •  Pacadia  •  Pakwolf  •  Pamuse  •  Paradise (TB 2925)  •  Partricia  •  Pautho  •  Pebebock  •  Peladons  •    •  Pelmafore  •  Pen-Latol's  •  Pepperland  •  Perjant  •  Perx  •  Petask  •  Petitot  •  Pewellyn  •  Phonecia  •  Pismo  •  Plustron  •  Poltan  •  Port Eoyel  •  Port Lanta  •  Port Xanatath  •  Portine (TB 1311)  •  Poserdon  •  Pubora  •  Pursuin  •  Pylter  •  Pyremide  •  Quandre  •  Quantestal  •  Quesros  •  Quper  •  Qutan  •  Radson  •  Ralmu  •  Ratan  •  Reejus  •  Reerack  •  Regal IV  •  Regalice  •  Relmer  •  Rematon  •  Rhintril  •  Rodoto  •  Rolland  •  Ronix  •  Rorschach   •  Rouault  •  Runelma  •  Rysholm  •  Ryswick  •  Saint-Beune  •  Samos  •  Santayana  •  Sanus  •  Sapies  •  Satyr  •  Seital  •  Shelando  •    •  Shief (TB 0435)  •  Shimerdon  •  Siderion  •  Sildona  •  Sinigo  •  Smedley  •  Snowdon  •  Sonica  •  Sopich  •  St. Thomas  •  Stockhelm  •  Storm Rider  •  Stowkau  •  Stylap  •  Sukarno  •  Sumoon  •  Sunda  •  Synth  •  Tafeld  •  Talf  •  Tamatave  •  Tarmo  •  Tarstal  •  Taspar  •  Taunce  •  Teloth  •  Tepas  •  Thacuri  •  Thrace  •  Tiselius  •  Tongal  •  Toubkal  •  Touxilay  •  Transear  •  Trimeter  •  Tshi  •  Tudwick  •  Tully  •  Tulsi Das  •  Ugnes  •    •  Uriaholm  •  Usatuc  •  Valpor  •  Vepar  •  Verstand  •  Victoria (TB 1433)  •  Vilacon  •  Vonbar  •  Vormuch  •  Vrongh  •  Wabor-Parn  •  Waldorf  •  Wanmor  •  Wathian  •  Wedton  •  Westmach  •  Westmoore  •  Westmount  •  Widcliff  •  Wignatau  •  Willemstad  •  Wimstudei  •  Winslow  •  Wolfen  •  Xantype  •  Xenia  •  Yagnuir  •  Yampul  •  Yberam  •  Yukva  •  Zaharoff  •  Zaragoza  •  Zelden  •  Zephor  •  Zilac  •  Zimcandon  •  Zonark  •  Zoolan  •  Zordan  •  Zurbaran  •  Zwickau  •  

Note that some Second Survey data, though only 40 years old, may already be out of date.

• Verified updated data is constantly sought.

Economic Astrography

Corporations

Several major corporations operate within the sector:

• Aaleem Consolidated Factors, a shipping line headquartered at the industrial hub of Oujda that specializes in moving heavy equipment.
• Baylor-Ator Lines, a shipping line based at the water world of Hertansi that serves the new colonies along the trailing frontier. It is in competition with Polygraham Shipping.
• Cannis Weapons Labs, a manufacturing corporation headquartered on the Jaibok-controlled world of Jelmirt. Its commercial status remains unclear.
• Continental Lines, a shipping line based at Isbelra and serving the Trooles Confederation and the neutral worlds around the Korsumug Gate region.
• Polygraham Shipping, a shipping line based at technologically advanced Conacus that serves the new colonies along the trailing frontier. It is in competition with Baylor-Ator Lines.
• Wilcox Mining and Development Corporation, based at Dennson and operating across Theta Borealis and parts of Mavuzog and Theron Sectors.

Shipbuilding

Importance (highlighted in green)

Worlds with Class A Starports are able to manufacture starships. Shipyard capacity is based on local population and tech level.

(Chart sourced from Traveller Map)

• Red indicates a population 10 world with a Class A Starport (a major shipbuilding center).
• Yellow indicates a population 9 world with a Class A Starport (an important shipbuilding center).
• Green indicates a population 8 world with a Class A Starport (a large shipyard).
• Blue indicates a population 7 world with a Class A Starport (a minor shipyard).
• Tan indicates a relatively high population and a suitable port, but a tech level too low to construct starships.

Non-industrial and low population worlds are rarely able to undertake manufacturing.

Jaibok Raiders

Jaibok raiders pose a considerable risk to interstellar trade and commerce within the sector.

Raiders may be individual opportunists, part of an organised private venture, or operating as part of the Imperial Korsumug Navy.

Trade Routes

A number of trade routes exist within this area. Of these, the most important are:

Korsumug Main

The Korsumug Main, the great chain of Jump-1 systems linking Astron Sector, Theta Borealis Sector, and Mavuzog Sector, runs through the region.

• It is also known as the Thetan Main.
• It passes through the spectacular heart of the Borealis Group.
• The narrow bridge of stars that carries the Main across the Thetan Rifts is known as the Korsumug Gate.
• Korsumug raiders cruise the Main, looking for plunder, resources, and glory.

A simple chart showing parts of Mavuzog Sector, Theta Borealis Sector, Chiep Zhez Sector, and Astron Sector, and the Korsumug Main running between them.

• The majority of worlds forming the Main lie within Theta Borealis sector.

(Chart sourced from Traveller Map)

• Vech, the Jaibok homeworld, is marked in red.
• Jansazar, the Jansa homeworld, is marked in green.

Korsumug Gate

The Korsumug Gate is the name given to the coreward part of the Korsumug Main.

• The area is a natural choke point.
• The Main forms the only easily navigable route between the empty expanses of the Thetan Rift and the Thetan Void.

(Chart sourced from Traveller Map)

Dennson Main

The Dennson Main is named for Dennson, its most important world.

• It lies on the rimward edge of the Thetan Void.

(Chart sourced from Traveller Map)

• Worlds in tan lie on the Dennson Main.
• Worlds in blue lie on the Korsumug Main.

Nexur Cluster

The Nexur Cluster is named for the yellow giant primary star of the Nexur system.

• It straddles the border between Mavuzog Sector and Theta Borealis Sector.
• It contains the homeworld of the Jansa.
• It is considered the heartland of the Korsumug Empire.

(Chart sourced from Traveller Map)

• Worlds in tan are members of the Cluster.
• Worlds in blue lie on the Korsumug Main.

Theta Borealis Jump Hubs

Three Calibration Points (deep space refuelling points, locally referred to as Jump Hubs) are located within Theta Borealis Sector:

• Nezal Jump Hub (hex 1812, Phoenix Subsector)
• Latol Jump Hub (hex 2318, Phoenix Subsector)
• Deepspace Jump Hub (hex 3117, Sibigil Subsector)

These Hubs are corporate-operated and not generally accessible to non-corporate personnel or vessels.

• Their presence is not displayed on commercially available star charts.
• Their exact location within their respective hexes is not publically available.

Hexes are extremely large, in the region of 3.2 lightyears / 170 light weeks across.

• Without exact coordinates to jump to within it, any ship arriving randomly within the hex is likely to end up many tens of light-weeks away from the Calibration Point.

(Chart sourced from Traveller Map)

Nomad Ports

Large tanker vessels occasionally pair with commercial tenders, vessels equipped to carry out field maintenance and repairs on smaller craft. These two vessels, working together, can temporarily provide some equivalence to Class B starport facilities on frontier worlds. Such outfits are usually escorted by one or more Starmerc warships, such as fast gunboats or armored escorts.

• The Nomad Port moves from system to system, usually working to an established itinerary.
• The arrival of a Nomad Port is often timed to coincide with a harvest or a local festival, when in-system traffic is likely to be higher.
• Well equipped private security forces are usually retained.

Aslan Exploration Route

The Aslan may have established an exploration route along the coreward edge of the Great Rift, bypassing the heavily populated and potentially hostile human dominated worlds of Theta Borealis Sector.

• They appear to be using hidden fuel caches, likely located within hex 1705 of Styehfyeao Subsector (Subsector C of Khaeaw Sector) and hex 2604 of Ihohea Subsector (Subsector D of Khaeaw Sector).
• If it really exists, the route relies on Jump-5 vessels.

A simple map showing the likely Aslan exploration route along the Great Rift to the rimward part of Mavuzog Sector.

(Chart sourced from Traveller Map)

• Rift regions are shown in blue.
• Known Aslan outposts and settlements are ringed in red.
• Collaborating human worlds are ringed in green.

Aslan would likely use the route to communicate with and supply their explorers, pioneers, and scattered outposts within the region.

• The existence of the route and the fuel caches has not been definitively proven.

History & Background (Dossier)

Early History

The Ancients are known to have been active in the sector - the presence of the Attorn, a minor human race native to the sector, being considered irrefutable proof. A few remains, ruins, and even advanced artifacts have been found, all seemingly dating to more than a quarter of a million years ago. Between those distant times and the "modern" era (the beginning of the Vilani Imperium onwards) there are no indications that any sophonts were active at an interstellar level within the region.

• The Vilani discovered jump technology in -9235 but ceased exploration and closed their borders long before any explorers ventured close to Theta Borealis.
• The Zhodani discovered jump technology in -5415. It is quite likely that a few of their vessels passed through the sector, though they have left no discernible trace.

The first humans (other than the Attorn) to definitely enter the region were rugged Terran explorers and pioneers, equipped with their still-new FTL drive technology and eager to open up a distant frontier.

• Terrans discovered Jump Drives in -2431.

Surviving records indicate that the very first Terrans had entered the sector by around the end of the First Interstellar War, in -2396.

In under four decades a few adventurous Terrans had travelled many hundreds of parsecs from their homeworld, first heading coreward, somehow managing to cross the entire First Imperium and avoiding the emerging peril of raiding Vargr, finding the path across the Great Rift through Corridor Sector, before pushing on to spinward, into the vast rift-filled wilderness Behind the Claw. While fragmentary records of their journeys survive, for the most part these early pioneers left few physical traces on the worlds they visited.

The Korsumug Empire

The technologically sophisticated Jansa, a species native to Jansazar in Mavuzog Sector, acquired knowledge of jump technology from these first far-flung human travellers. By the middle years of the -2300s they had constructed at least one operational FTL vessel, the first species native to the region to have independent jump capability.

• The Jansa slowly explored their local area and discovered the Jaibok of Vech. Evidence suggests human explorers had contacted the Jaibok around a decade earlier, but didn't survive the experience. A sudden improvement in Jansa technology at this time may indicate that they were able to retrieve and reverse-engineer more advanced human tech from the Jaibok homeworld.
• First contact between the Jansa and the Jaibok is considered to be the beginning of the Korsumug Empire.

The Korsumug Empire has risen, grown, fractured, collapsed, and entirely disappeared multiple times since its first appearance, around 3500 years ago. The Jansa and the Jaibok consider their empire to have endured for the whole of that vast period of time, even though most others do not.

(Chart sourced from Traveller Map)

The current incarnation of the Korsumug Empire emerged in the late 500s, largely within the central part of Mavuzog Sector. Unlike previous manifestations of the state the Jansa have taken a more proactive role within its structure, building large warships and using them to enforce a degree of stability on the state. While the Empire has experienced internal conflict and multiple civil wars, so far it has not suffered the catastrophic internal strife that has ended its predecessors - in fact, particularly over the last century, the Empire has had fitful bursts of expansion that have gained it huge new territories.

Human Settlement

Terran humans began arriving in Theta Borealis Sector in greater numbers during the time of the Interstellar Wars and the Rule of Man, particularly after the discovery of Jump-3 drives. They were drawn by the tales of the earliest explorers, who painted a rosy picture of distant, unpopulated, resource-rich worlds far from the oppressive control of any interstellar state, and they had the beacon of Theta Borealis to guide them there. By the -1900s there were scattered human settlements across the sector and beyond.

This trickle of humanity slowed and then stopped during the Long Night. As the Night deepened interstellar travel within the region effectively ceased and many worlds became barren. Some worlds within the sector, however, flourished during this period, particularly those within its trailing and rimward parts. As new waves of immigration entered the region towards the end of the Long Night, these long-established worlds became the settler's preferred destination, offering them either a chance to repair and re-equip before setting off beyond the frontier, or for many a new home and a new start. Later the region became known as the Verstand-Jugartha Colonies

A simple map of the Verstand-Jugartha Colonies region:

(Chart sourced from Traveller Map)

• Worlds considered historical colonies are highlighted in dark red.

Towards the end of the Long Night these far off, half-remembered, mythically idyllic worlds served as the focus for waves of settlers originating in what later became the Imperial core. They had gained access to Sylean jump technology, they were seeking empty worlds of their own, and were prepared to undertake the long and dangerous journey to the island of civilization they believed existed far to spinward.

In the Year 0, far to trailing, the Third Imperium was founded. From the 100s onward, small groups of humans began to move through the region, many fleeing the perceived oppression of Imperial rule, and spreading their improved technology and re-establishing the routine use of jump drives as they did so. Later waves of arrivals found that their destination was fairly heavily settled and so carried on to spinward, seeking other empty but habitable worlds within the region that they could claim. This slow trickle of humanity had effectively ceased by the end of the third century, largely due to the emergence of polities (and hostilities) in the sectors Behind the Claw. By the beginning of the twelth century some of these outposts had grown into heavily populated worlds with distinctive cultures of their own.

Minor States

Various minor polities have risen and fallen within the region over the centuries.

Of those that are currently extant the Kingdom of Peladon is the oldest, having existed in its current form since the 600s. The Jelmiri Marches gradually came into being in the 900s and the charter creating the Trooles Confederation was signed in the 1040s. All three of the states formed as a response to ongoing Korsumug expansion and atrocities, with the date of their formation corresponding to their relative proximity to the Korsumug Empire. The Empire attacked and conquered the Marches at the beginning of the twelth century, occupying it and renaming it the Percavid Marches.

Native Sophonts

The following races (sophont species) are believed to have originated within the sector:

• Humaniti (Human races)
  • Attorn of Geptorem (Minor Human Race).

• Non-Human Races
  • Alejia of Marinagua: flexible, long necked, long-limbed, constantly moving non-humanoids from an insidious atmosphere world.
  • Bose of Wabor-Parn: large, powerfully built humanoids with a golden coloration from a jungle-clad tropical world.
  • Burugdi of Bur'vr'di'klr: eight-limbed psionic creatures with a reputation for being amoral and ruthless in business.
  • Byl of Lomodo IVa (extinct).
  • Captutians of Nithus: physically small, technologically advanced humanoids from an arid hell world.
  • Cleashitar of Pen-Latol's: powerful humanoids with bifurcated forearms from an agricultural world with a tropical climate.
  • Cygmo of Sapies: barbaric warlike humanoids with a strong sense of tradition from an agricultural world with a tropical climate.
  • Halkyons of Hydronaut (extinct).
  • Irf of Lomodo IVa (extinct).
  • Mitzene of Sapies: small, lightly built, technologically advanced humanoids from an agricultural world with a tropical climate.
  • Osp of Lomodo IVa: gelatinous organisms, able to grow pseudopods as needed, originating on an exotic atmosphere world with a generally temperate climate.
  • Sedas of Nystalux: hive-dwelling, six-limbed insectoids with a hard exterior carapace from a rich agricultural garden world.
  • Trist of Wabor-Parn: large, powerfully built humanoids with a residual tail from a jungle-clad tropical world.
  • Tshini of Zephor: very large, sedate, slow moving bipedal omnivores from a dying hell world.
  • Zephora of Zephor (extinct).

Demographics

Theta Borealis Sector has a population of more than 893.5 billion individuals originating from 15 separate sophont species:

• Humaniti (Human races)
  • Mixed Solomani and Vilani descent: 808 billion.
    • Includes the Nh'ekul culture.
  • Attorn: 700 million.
  • Zhodani: less than a million.

• Non-Human Races
  • Aslan (major race): less than 1 million, largely transient populations on rimward worlds.

• Minor Non-Human Races
  • Jaibok: 72.9 billion on multiple worlds. Their numbers may significantly increase as a new breeding cycle draws near.
  • Burugdi: 8 billion on seven worlds.
  • Jansa: 3.8 billion on multiple worlds.
  • Sedas 70 million on one world.
  • Osp: 8 million on one world.
  • Cygmo: approximately 3 million on one world.
  • Mitzene: approximately 3 million on one world.
  • Cleashitar: 600,000 on one world.
  • Alejia: 300,000 on one world.
  • Captutians: 100,000 on one world.
  • Tshini: 47,000 on two worlds.
  • Bose:10,000 on one world.
  • Trist: 10,000 on one world.

Symbols

Three jagged vertical downward strokes are commonly used as a symbol to represent the sector.

• The imagery is based on the claws of the Jaibok.
• This symbol is used by the Korsumug Empire.

Linguistic Topography

The following languages are among the most commonly used within this astrographic region:

• Native Languages.
• Riftian Anglic.
• Trokh.
• Zdetl.

Toponyms

This sector has been known by different names to different groups over its existence including the following:

Theta Borealis Sector Names
Culture	Toponym	Polity
Third Imperium	Theta Borealis	Third Imperium
Aslan	Theta Borealis	Aslan Hierate
Droyne	Unknown	Droyne Oytrip Yatroy
Hiver	Theta Borealis	Hive Federation
K'kree	Unknown	Two Thousand Worlds
Solomani	Theta Borealis	Solomani Confederation
Vargr	Theta Borealis	Vargr Extents
Vilani	Theta Borealis	Third Imperium
Zhodani	Theta Borealis	Zhodani Consulate

Major Historical Events Timeline

Major events that have affected this sector and the wider region that it lies within:

• ca -250,000: The Ancients were likely active within the sector.
• -5415: The Zhodani discover jump drive technology but do not seem to have interacted with the sector.
• -2431: Terrans invent the jump drive.
• -2396: The first known Terran explorers are active in the region.
• ca -1900: The first known human settlers enter the region (individuals keen to leave the Rule of Man). Their occasional reports paint the region as a paradise.
• -1776: The Long Night begins.
• -100s: Inspired by their ancestor's tales, a few settlers from the heart of Charted Space gain Sylean jump technology and head towards the sector.
• Year 0: Far to trailing, across the Great Rift, the Third Imperium is founded. Individuals unhappy with the idea of Imperial rule continue to depart for new worlds.
• 200s: Regional politics halt the flow of Imperial settlers.
• 300-420: The Imperial First Survey charts the sector.
• 500s: The Korsumug Empire rises within Mavuzog Sector.
• Late 500s: Jaibok raiders of the resurgent Korsumug Empire become active on the Korsumug Main.
• 600s: The Kingdom of Peladon forms.
• 900s: The Jelmiri Marches forms.
• 995-1065: The Imperial Second Survey charts the sector.
• 1040s: The Trooles Confederation forms.
• 1065: The Imperial Second Survey is published.
• 1100s: The Korsumug Empire conquers the Jelmiri Marches, renaming it the Percavid Marches.

Worlds, Systems & Sectors (Political Astrography)

(Chart sourced from Traveller Map)

Polity Descriptions

Summaries of the polities found within the sector:

1. Allegiance: CsIm: Client state, Third Imperium.
2. Allegiance: KoEm: Korsumug Empire.
3. Allegiance: KoPm: Percavid Marches.
4. Allegiance: KPel: Kingdom of Peladon.
5. Allegiance: NaHu: Non-Aligned, Human-dominated.
6. Allegiance: NaXX: Non-Aligned, unclaimed.
7. Allegiance: TrCo: Trooles Confederation.

Capitals

• Isbelra, capital of the Trooles Confederation.
• Jelmirt, provisional capital of the Percavid Marches.
• Peladons, capital of the Kingdom of Peladon.
• Shimerdon, regional capital of the Korsumug Empire.

Military Forces

Various military forces are active within the sector:

• Imperial Korsumug Navy, pursuing the interests of the Korsumug Empire within the region.
• Jelmiri Loyal Fleet, those elements of the military forces of the Percavid Marches actively cooperating with the Korsumug Empire.

• Royal Peladon Navy, the defenders of the Kingdom of Peladon and the region of Balkanized Space around it.
• Trooles Confederation Navy, the defenders of the Trooles Confederation and the region of Balkanized Space around it.
• Jelmiri Free Legion, those forces seeking to free their homeland from the domination of the Empire.

Sector Summary

(Note that this data is awaiting an AAB Internal Records verification.)

The Theta Borealis sector has 407 worlds with an estimated population of 893 billion, a per capita income of Cr3,639, and a total economy is BCr3,250,344. These worlds originate an interstellar trade of BCr4,125 through 339 starports (75 Class A, 94 Class B, 121 Class C, 49 Class D) employing 490,050 people. Driving this interstellar trade are 64 Agricultural (Ag) worlds, 35 Non-Agricultural (Na) worlds, 26 Pre-Agricultural (Pa) worlds, 46 Pre-Industrial (Pi) worlds, 22 Rich (Ri) worlds, and 21 Industrial (In) worlds. The governments in Theta Borealis maintain 19 Naval bases, 13 Scout bases, and two Military bases. The average technology level is 8 (with most between 5 and 10). The highest technology level is 13 at Boswool (Theta Borealis 0205), Pautho (Theta Borealis 1506), Isbelra (Theta Borealis 1602), Oujda (Theta Borealis 2703), Tamatave (Theta Borealis 2708), and Nithus (Theta Borealis 3107).

The Theta Borealis sector contains 605 stars and 4,188 identified planets; 264 monostellar systems, 100 binary systems, 33 trinary systems, and ten systems with four or more stars. 226 of the 407 systems (55%) have native gas giants. There are 14 Asteroid (As) belts, 25 Desert (De) worlds, 22 Garden (Ga) worlds, nine Ice-capped (Ic) worlds, 62 Poor (Po) worlds, 38 Vacuum (Va) worlds, and 29 Water (Wa) or Ocean (Oc) worlds.

Theta Borealis has an estimated population of 893 billion distributed across 43 High population (Hi) worlds, 35 Moderate population (Ph) worlds, 170 Non-industrial (Ni) worlds, 103 Low population (Lo) worlds, and seven Barren (Ba) worlds. The highest population worlds are Plustron (Theta Borealis 1732), Jelmirt (Theta Borealis 1223), Ratan (Theta Borealis 2822), Devalera (Theta Borealis 0525), Obaroth (Theta Borealis 0434), and Quper (Theta Borealis 0537). The population consists of 15 sophont groups including ten native sophonts.

16 identified sophont populations in Theta Borealis

Humaniti of Terra (Solomani Rim 1827): 808 billion on 368 worlds. Jaibok of Vech (Mavuzog 2922): 72.9 billion on 37 worlds. Jansa of Jansazar (Mavuzog 3120): 3.8 billion on 37 worlds. Attorn of Geptorem (Theta Borealis 1517): 700 million on their homeworld. Sedas of Nystalux (Theta Borealis 1922): 70 million on their homeworld. Osp of Lomodo (Theta Borealis 0204): 8 million on their homeworld. Cygmo of Sapies (Theta Borealis 2606): less than 4 million on their homeworld. Mitzene of Sapies (Theta Borealis 2606): less than 4 million on their homeworld. Byl of Lomodo (Theta Borealis 0204): Extinct Species. Irf of Lomodo (Theta Borealis 0204): Extinct Species. Halkyon of Hydronaut (Theta Borealis 0709): Extinct Species. Bose of Wabor-Parn (Theta Borealis 2903): less than 1 million on their homeworld. Trist of Wabor-Parn (Theta Borealis 2903): less than 1 million on their homeworld. Captutian of Nithus (Theta Borealis 3107): less than 1 million on their homeworld. Tshini of Zephor (Theta Borealis 0911): less than 1 million on their homeworld. Zephora of Zephor (Theta Borealis 0911): Extinct Species. Cleashitar of Pen-Latol's World (Theta Borealis 3107): less than 1 million on their homeworld. Alejia of Marinagua (Theta Borealis 1517): less than 1 million on their homeworld.

Polities

Non-Aligned, Human-dominated

There are 313 Non-Aligned Human-dominated worlds in Theta Borealis with an estimated population of 668 billion.

Korsumug Empire

The Korsumug Empire has jurisdiction over 32 worlds with an estimated population of 145 billion, a per capita income of Cr1,858, and a total economy is BCr269,419. These worlds originate an interstellar trade of BCr140 through 22 starports (5 Class A, 5 Class B, 11 Class C, 1 Class D) employing 21,305 people. Driving this interstellar trade are four Agricultural (Ag) worlds, six Non-Agricultural (Na) worlds, two Pre-Agricultural (Pa) worlds, five Pre-Industrial (Pi) worlds, no Rich (Ri) worlds, and one Industrial (In) world. The governments in Korsumug Empire maintain two Naval bases, one Military base, and one Scout base. The average technology level is 7 (with most between 5 and 10). The highest technology level is 13 at Shimerdon (Theta Borealis 0624).

The Korsumug Empire has an estimated population of 145 billion distributed across five High population (Hi) worlds, five Moderate population (Ph) worlds, 15 Non-industrial (Ni) worlds, four Low population (Lo) worlds, and no Barren (Ba) worlds. The highest population worlds are Devalera (Theta Borealis 0525), Marconi (Theta Borealis 0623), Ostello (Theta Borealis 0127), and Amberlite (Theta Borealis 0230). The population consists of 1 sophont groups.

• The Korsumug Empire subsector capital of Anguilla is Shimerdon (Theta Borealis 0624)

Trooles Confederation

The Trooles Confederation has jurisdiction over 19 worlds with an estimated population of 226 million, a per capita income of Cr1,685, and a total economy is BCr381. These worlds originate an interstellar trade of BCr1 through 15 starports (1 Class A, 2 Class B, 7 Class C, 5 Class D) employing 425 people. Driving this interstellar trade are three Agricultural (Ag) worlds, two Non-Agricultural (Na) worlds, no Pre-Agricultural (Pa) worlds, one Pre-Industrial (Pi) world, two Rich (Ri) worlds, and no Industrial (In) worlds. The average technology level is 7 (with most between 4 and 10). The highest technology level is 13 at Isbelra (Theta Borealis 1602).

The Trooles Confederation has an estimated population of 226 million distributed across no High population (Hi) worlds, no Moderate population (Ph) worlds, 12 Non-industrial (Ni) worlds, three Low population (Lo) worlds, and no Barren (Ba) worlds. The highest population worlds are Galores (Theta Borealis 1204), Huflink (Theta Borealis 1504), Ivorholm (Theta Borealis 1101), and Malvord (Theta Borealis 1502). The population consists of 1 sophont groups.

• The Trooles Confederation subsector capital of Festab is Isbelra (Theta Borealis 1602)

Percavid Marches

The Percavid Marches has jurisdiction over 18 worlds with an estimated population of 70 billion, a per capita income of Cr6,527, and a total economy is BCr461,145. These worlds originate an interstellar trade of BCr123 through 16 starports (6 Class A, 4 Class B, 5 Class C, 1 Class D) employing 20,220 people. Driving this interstellar trade are three Agricultural (Ag) worlds, three Non-Agricultural (Na) worlds, two Pre-Agricultural (Pa) worlds, three Pre-Industrial (Pi) worlds, no Rich (Ri) worlds, and one Industrial (In) world. The governments in Percavid Marches maintain one Naval base. The average technology level is 8 (with most between 5 and 11). The highest technology level is 13 at Rhintril (Theta Borealis 0724).

The Percavid Marches has an estimated population of 70 billion distributed across one High population (Hi) world, one Moderate population (Ph) world, 12 Non-industrial (Ni) worlds, one Low population (Lo) world, and no Barren (Ba) worlds. The highest population world is Jelmirt (Theta Borealis 1223). The population consists of 2 sophont groups.

• The Percavid Marches subsector capital of Persiphus is Jelmirt (Theta Borealis 1223)

Kingdom of Peladon

The Kingdom of Peladon has jurisdiction over 13 worlds with an estimated population of 371 million, a per capita income of Cr1,808, and a total economy is BCr671. These worlds originate an interstellar trade of BCr1 through 11 starports (2 Class A, 4 Class B, 3 Class C, 2 Class D) employing 285 people. Driving this interstellar trade are two Agricultural (Ag) worlds, one Non-Agricultural (Na) world, no Pre-Agricultural (Pa) worlds, one Pre-Industrial (Pi) world, one Rich (Ri) world, and no Industrial (In) worlds. The governments in Kingdom of Peladon maintain one Naval base, and one Scout base. The average technology level is 8 (with most between 6 and 10). The highest technology level is 13 at Bilsham (Theta Borealis 0411).

The Kingdom of Peladon has an estimated population of 371 million distributed across no High population (Hi) worlds, one Moderate population (Ph) world, six Non-industrial (Ni) worlds, five Low population (Lo) worlds, and no Barren (Ba) worlds. The highest population world is Cabon (Theta Borealis 0512). The population consists of 1 sophont groups.

• The Kingdom of Peladon subsector capital of Alpha is Peladons (Theta Borealis 0110)

Non-Aligned, unclaimed

There are 11 Non-Aligned unclaimed worlds in Theta Borealis with an estimated population of 8 billion.

Client state, Third Imperium

The Client states of the Third Imperium in Theta Borealis encompasses one world with an estimated population of less than 1 million.

Subsector Summary

The following subsectors can be found within this sector:

	Subsector Name	Astrography	Allegiances	Remarks
Subsector A:	Alpha Subsector	Lower density Thetan Rift	Kingdom of Peladon Balkanized Space	The coreward frontier of settled space.
Subsector B:	Festab Subsector	Lower density Thetan Rift	Trooles Confederation Balkanized Space	The coreward frontier of settled space. The subsector lies on the Korsumug Main. It is part of the Korsumug Gate region. Frequent Jaibok raiders.
Subsector C:	Monway Subsector	Standard density	Trooles Confederation Balkanized Space	The coreward frontier of settled space. The subsector lies on the Korsumug Main. It is part of the Korsumug Gate region. Reputed location of the Enigma of Theta Borealis. Frequent Jaibok raiders.
Subsector D:	Banderhue Subsector	Standard density	Balkanized Space	The coreward frontier of settled space. Reputed location of the Enigma of Theta Borealis. A center for manufacturing starships.
Subsector E:	Evalren Subsector	Standard density	Kingdom of Peladon Korsumug Empire Balkanized Space	Ongoing tensions between the Empire and the Kingdom. Occasional border skirmishes and Jaibok military incursions. Frequent Jaibok raiders.
Subsector F:	Corelian Subsector	Lower density Zephor Void	Percavid Marches Balkanized Space	The subsector lies on the Korsumug Main. It is part of the Korsumug Gate region. The heart of the Borealis Cluster. Some areas (primarily the Percavid Marches) have been occupied by the Korsumug Empire. Occasional border skirmishes and Jaibok military incursions. Frequent Jaibok raiders.
Subsector G:	Phoenix Subsector	Lower density Thetan Void	Balkanized Space	The subsector lies on the Korsumug Main. It is part of the Korsumug Gate region. The heart of the Borealis Cluster. Two Jump Hubs are believed to be operational. Occasional border skirmishes and Jaibok military incursions. Jaibok raiders.
Subsector H:	Sibigil Subsector	Low density Thetan Void	Balkanized Space	The subsector lies on the Dennson Main. A rift Jump Hub is believed to be operational.
Subsector I:	Anguilla Subsector	Standard density	Korsumug Empire Percavid Marches Balkanized Space	The subsector lies on the Korsumug Main. Some areas (primarily the Percavid Marches) have been occupied by the Korsumug Empire. Frequent border skirmishes and Jaibok military incursions. Jaibok raiders.
Subsector J:	Persiphus Subsector	Standard density	Percavid Marches Balkanized Space	Part of the Verstand-Jugartha Colonies region. The subsector lies on the Korsumug Main. The heart of the Borealis Cluster. Some areas (primarily the Percavid Marches) have been occupied by the Korsumug Empire. Frequent border skirmishes and Jaibok military incursions. Frequent Jaibok raiders. Formerly a center for manufacturing starships.
Subsector K:	Ventura Subsector	Standard density	Balkanized Space	Part of the Verstand-Jugartha Colonies region. The subsector lies on the Korsumug Main and the Dennson Main. The heart of the Borealis Cluster. Occasional border skirmishes and Jaibok military incursions. Jaibok raiders.
Subsector L:	Duhamel Subsector	Standard density	Balkanized Space	Part of the Verstand-Jugartha Colonies region. The subsector lies on the Dennson Main. A center for manufacturing starships.
Subsector M:	Trasfalca Subsector	Lower density Great Rift	Balkanized Space	The subsector lies on the coreward edge of the Great Rift. It lies on the Korsumug Main. Occasional border skirmishes and Jaibok military incursions. Jaibok raiders. Increasing Aslan Ihatei activity.
Subsector N:	Borealis Kantel Subsector	Lower density Great Rift	Balkanized Space	The subsector lies on the coreward edge of the Great Rift. Increasing Aslan Ihatei activity.
Subsector O:	Jauhaux Subsector	Lower density Great Rift	Balkanized Space	Part of the Verstand-Jugartha Colonies region. The subsector lies on the coreward edge of the Great Rift. Increasing Aslan Ihatei activity.
Subsector P:	Bengalaz Subsector	Lower density Great Rift	Balkanized Space	Part of the Verstand-Jugartha Colonies region. The subsector lies on the coreward edge of the Great Rift. Increasing Aslan Ihatei activity.

References & Contributors (Sources)

This article has two or more sources with conflicting information. Because the conflict has not been resolved, all sources are linked to this article.

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This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Bill Bledsaw. Theta Borealis Sector (Group One, 1981), pages 8-16. (Full Classic Traveller sector data)
• J. Andrew Keith, Marc Miller, John Harshman. Aslan (Game Designers Workshop, 1984), IBC. (Sector named but no further date)
• Peter G. Celella, James Holden. Solomani & Aslan (Digest Group Publications, 1991), pages 11, 50. (Dot maps provided finalizing the locations of worlds)
• Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), hardback IBC). (The Enigma of Theta Borealis)
• Author & Contributor: Jo Grant of CORE. (Additional generated data)
• Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science, Emeritus. (Initial layout)
• Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS. (General content and layout)