TEXT:  
   
  - 00 - 
   
   
   
   
   
   
   Each system hex is the potential home to a central system and perhaps several subordinate systems. 
   
  
   
   
  - 00 - 
   
   
  THE TYPICAL STAR SYSTEM 
   
   
  The Typical Star System Contains: 
   A Central Star 
   Orbits numbered 0 (zero) upward 
   Worlds (including planets, gas giants, and asteroids) occupying some (or all) of these orbits. 
   
   
   
   
   
  
   
   
  - 00 - 
   
   
   
   
   
   
   
   
   
  THE INNER SYSTEM 
   
  Orbits 0-6 
  THE OUTER SYSTEM 
   
  Orbits 7-12 
  THE REMOTE SYSTEM 
   
  Orbits 13-19 
   
   
   
   
  
   
   
  - 00 - 
   
   
  Star Systems and Their Worlds O
   
   Star systems contain accumulations of stars, gas giants, and worlds.  
   
   Traveller System Generation is a process that provides increasing levels of detail and complexity as a Star System is 
  explored.  
   MOARN Map Only As Really Necessary. Some journeys stop only momentarily in star systems; the information required 
  about that is little more than the type of world present and perhaps the location of a gas giant for starship refueling. Other 
  systems create a need for extensive information: details of several worlds, the location of companion stars, and even 
  information about worlds in the remote or outer system. 
   Traveller System Generation is a hierarchical process which can be started and stopped as the situation requires. The 
  referee need create only as much information as the players need; as more is required, more can be generated. 
   
  UNDERSTANDING STAR SYSTEMS 
   A star system consists of a central star and a family of 
  planets.  
   Multiple Stars. Some systems have more than one star. 
  The central star is the Primary. There may be other stars 
  which are Close (Orbits 0-1-2-3-4-5), Near (6-7-8-9-10-11), or 
  Far (Orbits 12-13-14-15-16-17). Each of these stars may 
  have a Companion which is extremely close. 
   Orbits. Each star is encircled by a series of Orbits number 
  beginning with 0 and extending as far as Orbit-19. Orbits are 
  numbered to correspond to these in the Solar System (that is, 
  1= Mercury, 2= Venus, 3= Earth). An additional Orbit-0 is 
  allowed inside the orbit of Mercury. 
   Worlds. Each star may have a variety of worlds: planets, 
  gas giants, asteroid and planetoid belts, satellites, and 
  worldlets.  
   
  The Mainworld 
   The focus of each system is its Mainworld: the single most 
  important world in the system. If the Mainworld has a high 
  population, other worlds in the system are probably explored 
  and even settled. If the Mainworld has a low population, the 
  other worlds in the system are likely barren. 
   The Mainworld is the world referenced in astrogation data 
  bases and is generally the destination of most travelers 
  entering the system (just as Terra is the likely destination of 
  those visiting the Sol system). 
   
  DESCRIBING SYSTEMS 
   Star systems are recorded and described on a series of 
  FillForms. Most systems can be described on the Inner 
  System FillForm which covers the central star and orbits 0 
  through 6. Where necessary, additional Fillforms can be used 
  for the Outer System and the Remote System. 
   
   
   
   
   
   
   
   
  CREATING STAR SYSTEMS AND THEIR WORLDS 
   The process of creating star is governed by the System 
  Generation Checklist and Charts A through G. 
   
  A SYSTEM CHECKLIST 
   The System Checklist details the steps to be taken in 
  creating star systems. 
   
  The Second Survey Format 
   When large data bases of system information are called 
  for, they can be presented in the Second Survey Format: one 
  line per star system showing the Mainworld of the system and 
  other data appropriate for astrogation. 
   
  Sector Name 
   The Sector Name is known before the information is 
  created, as is the hex location of the system. 
   
  B MAINWORLD 
   The Mainworld is the most important world in the system. 
  The first step in system creation is generation of information 
  about the Mainworld. 
   Starport. The starport is on the Mainworld. Other 
  spaceports (for other worlds) can be created later in the 
  process. 
   Mainworld Type. The Mainworld may be a Planet 
  occupying an orbit, or it may be a Satellite orbiting a Gas 
  Giant (or a larger planet). It is possible for a Planet Mainworld 
  to be an Asteroid Belt (determined when World Size is 
  generated). 
   If the Mainworld is a Satellite, Flux determines the Orbit 
  name (a letter from Ay to Zee) and if it is Close or Far from its 
  world. 
   
  The Habitable Zone 
   The Habitable Zone is that region in a star system which is 
  hospitable to humans (and many similar sophonts). 
   Inner System Reference Chart H and Outer System 
  Reference Chart J show the orbits which are in the Habitable 
  Zone for various star types. 
   HZ is the abbreviation for Habitable Zone. An orbit is the 
  HZ allows the world to have liquid water and climate 
  hospitable to humans and similar sophonts. 
   HZ+1 is one orbit farther from the star; the resulting climate 
  is Cold (at the lower edge of human endurance). 
  
   
   
  - 00 - 
   HZ-1 is on orbit closer to the star; the resulting climate is 
  Hot (near the upper limits of human endurance). 
   
   Twilight Zone. A Planet in Orbit 0 or Orbit 1 is tidally 
  locked to its star. Although the world may be in the HZ, 
  hospitable conditions are present only in a narrow Twilight 
  Zone. 
   Locked. A Satellite in Close Orbit to its planet is Locked to 
  it; Satellites do not have Twilight Zones. 
   
  Gas Giants and Belts 
   The number of Gas Giants in the system and the number 
  of Planetoid Belts can be generated. 
   Gas Giants in a system = 2D /2 -2 (ignore fractions and 
  treat less-than-zero as zero) which produces a range from 0 
  to 4 with some chance of none at all. This value is for the 
  entire stellar hex regardless of the number of subsystems. 
   Planetoid Belts in a system = 1D – 3 (ignore fractions and 
  treat less-than-zero as zero) which produces a range from 0 
  to 3 with a fair chance of zero. This value does not include 
  the Mainworld if it is an Asteroid Belt. For terminology 
  purposes, an Asteroid Belt is a Mainworld; an Planetoid belt 
  is not a Mainworld. 
   
  Using Chart B 
   Chart B provides basic information about the Mainworld. 
  Ships can look up this information in data bases and can 
  make decisions before setting course for the system. The 
  presence of Gas Giants allows wilderness refueling. 
   
  C StSAHPGL-T 
   The basic information contained in the Universal World 
  Profile can be created with the instructions on the Chart A 
  Checklist. 
   
  THE UWP 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Starport 
   
   
   
   
   
   
   
   
   
   
   
  Size 
   
   
   
   
   
   
   
   
   
   
   
   
   
  Atmosphere 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Hydrographics 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   A 2 3 4 5 6 7
  -D
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Population 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Government 
   
   
   
   
   
   
   
   
   
   
   
   
  Law Level 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Technology Level 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Using Chart C 
   Chart C allows the information in the UWP to be decoded 
  and understood. 
   The instructions for creating the elements of the UWP are 
  appended to each table. 
   
  D TRADE CLASSIFICATIONS 
   The Trade Classifications reflect specific types of 
  information about the Mainworld (and to a lesser extent, other 
  locations in the system). 
   
  E THE EXTENSIONS 
   The Extensions provide additional information about the 
  Mainworld. 
   
  The Importance Extension 
   The Importance Extension (Ix) ranks worlds within a 
  region. It can range from +4 to -2. A world with +4 is 
  Important; a world with 0 or less is Unimportant. 
   Trade Routes. Trade Routes within a sector connect 
  Important Worlds with Jump-4 or less. If such a route is not 
  possible, intermediate connections with less important worlds 
  are possible. 
   Capitals. The most Important world in a subsector is the 
  Subsector Capital; the most important world in a Sector is the 
  Sector Capital. 
   When more than one world is of the highest Importance, 
  the one with the most Trade Classifications is considered 
  most Important. 
   
  The Economic Extension 
   The Economic Extension (Ex) is a measure of the 
  strength of a world economy and provides basic insights into 
  the economy’s structure and capabilities.  
   The Economic Extension is useful in evaluating the 
  budgets and outputs of a world, and for comparing the 
  economics of different worlds. 
   By detailing the Resources (= 2D plus GG and Belts), 
  Labor (= by Population), and Infrastructure (= 2D + 
  Importance), a general picture of the economic strength of 
  the World emerges.  
   Barriers add a handicap: legal, cultural, and social 
  inefficiencies which may increase or reduce overall economic 
  strength.  
   
   Resource Units. The Economic Extension can be used to 
  compute the Resource Units of a world (in effect, its world 
  budget).  
   
  RU 
  Resource Units = R * L * I * (5-B) 
   If any value = 0, use 1 instead (to avoid multiplying by 
  zero). 
   Resource units can be negative: a world can be a net drain 
  for Resource Units. 
   Barriers. All economies have barriers to total efficiency. In 
  the Economic Extension, Barriers range from 0 to 10, with 
  higher value values (because of the structure of the formula) 
  being the most destructive to an economy. 
   In the RU formula, Barriers at 6 or more turn the RUs 
  available negative: the Barriers are so destructive as to make 
  the economy a net drain. Such barriers represent a welfare 
  state; cultural influences which do not value wealth, even 
  physical limitations. 
   On the other hand, since nearly all economies have 
  barriers, lower-than-expected Barriers are a positive multiplier 
  increasing available RU. 
   The Golden World. The theoretical (possibly apochryphal) 
  world with maximum values under the Economic Extension 
  would not only have an immense RU value, it would have 
  virtually no Barriers to production: its citizens would value 
  work, production, efficiency, and even customer satisfaction 
  above all else. 
   Fractional Budgets. RU Resource Units are relative 
  values: they are best understood in comparison to other 
  
   
   
  - 00 - 
  worlds. Assuming World Alpha produces RU= 100 and World 
  Beta produces RU= 50, one can assume Alpha has an 
  economy twice the size of Beta. 
   Similarly, if Alpha has a naval budget for ship production, 
  Beta probably has half that budget. 
   
  The Cultural Extension 
   The Cultural Extension (Cx) is a broad insight into the 
  expected social behaviors of the citizens of the world.  
   
  F NABZ Nil 
   Additional Information about the world is produced by Chart 
  F. 
   Nobility. The Imperium assigns a representative to each 
  mainworld; this imperial Noble interacts with the local 
  government and population, serves as an ambassador, and 
  promotes trade and commerce. This noble may be a local 
  appointed by the Emperor, or may be an offworlder assigned 
  to the post.  
   When a world has a significant non-human population, the 
  Noble often has a local counterpart who deals with non-
  human locals. 
   Allegiance. Worlds within the Imperium owe their loyalty to 
  the empire; worlds just beyond the Imperial borders may be 
  Non-Aligned (carefully maintaining its neutrality), or Client-
  State (independent, but interacting with the empire at various 
  levels). 
   Worlds may be members of interstellar groups and owe 
  their allegiance to them. 
   Bases. Worlds may have bases for military, scout, or naval 
  purposes. 
   
  Travel Zones 
   Some worlds pose a variety of dangers to travelers. The 
  Travel Zone classification system assigns to worlds a basic 
  warning level based on experience. 
   Most worlds are Travel Zone Green: safe (relatively safe) 
  to visit. Green status is assumed within the Imperium unless 
  otherwise posted. 
   Some worlds are Travel Zone Red: dangerous to visitors. 
  The level of danger is severe enough that the world is 
  Interdicted and travel to the world is prohibited (with Trade 
  Classification Forbidden). The level of enforcement of Red 
  Zones varies: some systems are patrolled by Quarantine 
  fleets; others have merely a warning beacon. 
   Some worlds are Travel Zone Amber: visitors are advised 
  to use caution. Travel Zone Amber has two levels: 
  Dangerous and Puzzling, each reflected in a Trade 
  Classification. 
   Amber worlds with low population (Pop= 6 or less) are 
  labeled Amber if local conditions may prove to be dangerous 
  (as reflected by the low population). Amber worlds with higher 
  population (Pop= 7 or more) may require caution by visitors, 
  but the fact that large numbers live on the world makes the 
  classification less about danger and more about intriguing or 
  exotic conditions. 
   
  Native Status 
   Most worlds capable of supporting native intelligent live 
  have a (or had a now-extinct) population of sophonts. The 
  chart identifies the status of such sophonts. 
   
  System Stars 
   The precise number of stars in a system and their spectral 
  types can be created using the charts. 
   About half of all star systems will be single stars without 
  companions. 
   It is possible for a system to have eight stars: A Primary 
  and a Companion, a Close star in the inner system and its 
  Companion, a Near star in the Outer System and its 
  companion, and a Far star in the Remote system and its 
  Companion (the chance of such a system is extremely small). 
   
  Stellar Spectral Type 
   The precise spectral identity of the stars in the system are 
  generated using the Spectral Type chart. 
   
  The Size of Additional Star Systems 
   The number of available orbits for system stars is 
  restricted. 
   The Primary Star may have orbits out to Orbit-19 (not all 
  need be, or will be, filled).  
   Close, Near, and Far stars may fill orbits around them to 
  their own Orbit minus 3. For example, a Close Star in orbit 3 
  around its Primary can have no (= 3 – 3) planet orbits. A Far 
  star in Orbit 17 around its Primary can have planets in orbits 
  around it out to Orbit 14 (= 17 – 3). 
   The Sub Orbit Column of the Orbital Distance Chart 5a (in 
  the Ranges Chapter) shows available orbits. 
    
   
  G PLACING WORLDS 
   Chart G places the Mainworld in a specific Orbit and 
  creates and places other worlds in the system. If the supply 
  of worlds exceeds the available orbits, the excess worlds are 
  ignored. 
   
  Placing Worlds 
   Worlds in a system must be places in orbits.  
   The Placing Worlds Chart provides priorities and deals with 
  several exceptions.  
   The Mainworld is placed first. If it is a satellite, then a Gas 
  Giant must be placed in that orbit to accommodate it. If there 
  is no Gas Giant in the system, then a BigWorld (Size=-2D +7) 
  must be placed in that orbit.  
   If the Mainworld is an Asteroid Belt, it is placed using the 
  Belt Column of the Basic Placement Chart without regard to 
  Habitable Zone. 
   Rotate Placement. The Placing Worlds Chart calls for 
  Rotating Placement of various worlds in the system. If the 
  system has more than one star (Close, Near, Far), place the 
  first of the worlds concerned in orbit around the Primary, the 
  second in orbit around the Close, the third in orbit around the 
  Near, and the fourth in orbit around the Far (if possible). 
  Repeat the process if necessary.  
   Precluded Orbits. Some stars re so large that they engulf 
  some of the orbits in the system and preclude their 
  availablility.  
   The Surface of the Star… Column of the Orbital Distance 
  Chart 5a (in the Ranges Chapter) shows preculuded orbits. 
    
   Worlds other than the Mainworld are subject to restrictions: 
  Maximum Population is Mainworld Population minus 1. All 
  worlds other than the Mainworld have Spaceports rather than 
  Starports. 
   
  Other Worlds 
   The creation of additional worlds uses a simplified 
  procedure:  
   Inner Worlds are in orbits HZ minus 2 or more. 
  
   
   
  - 00 - 
   Hospitable Worlds are in orbits HZ – 1 to HZ +1. 
   Outer Worlds are in orbits HZ +2 or greater. 
   Consult the charts to determine the specific type of world 
  and then create it using the information from the Other 
  Worlds column. 
   Similar tables direct the creation of Satellites as necessary. 
   
   Hospitables are potentially habitable or exploitable worlds 
  located in the Habitable Zone. 
   Planetoids are the worldlets of a Belt. The Population, 
  Government, and Law Level represent the general level 
  throughout the Belt. 
   Iceworlds are frozen worlds beyond the HZ. 
   RadWorlds are worlds with extreme levels of radiation. 
  Local values for RadWorlds are provided in Range Table 3b 
  Strangeworlds. 
   Infernos are worlds with extremes of temperature. Local 
  values for Infernos are provided in Range Table 3b 
  Strangeworlds. 
   BigWorlds are worlds with larger than expected Size. 
  Occasionally, a satellite Mainworld in a system without Gas 
  Giants requires a BigWorld as its primary. Bigworld may also 
  occur throughout a system. 
   Worldlets are worlds with generally small Size.  
   Inner Worlds are located starward of the Habitable Zone. 
   Stormworlds are worlds wracked by constant atmospheric 
  turbulence. Local values for Stormworld are provided in 
  Range Table 3b Strangeworlds. 
   
  Satellites 
   When necessary, satellites for worlds and for gas giants 
  can be generated. 
   Ring. The table may create one or more Rings.  
   
  Even More Worlds 
   This system does not create the many small chunks of rock 
  and ice throughout most systems. 
  
   
   
  - 00 - 
  THE REGINA SYSTEM 
   Hex 1910 of the Spinward Marches sector was created as an example using charts. 
   
  A 
   The Sector Name is known: The Spinward Marches. 
   The Hex Location is already known: 1910. 
   The Mainworld Name is Regina. 
   
  B 
   Starport= 2D=4 = Type A. Excellent Quality. 
   Mainworld Type= Flux = - 4 = Far Satellite. 
   Satellite Orbit = Flux = -2 = Arr. 
   Habitable Zone Variance = Flux = 0 = no variance.  
   Climate (based on HZ=0) = Temperate. 
   Gas Giants = 2D / 2 - 2 = 10 / 2 – 2 = 3. 
   Planetoid Belts = 1D – 3 = 2 – 3 = 0. 
   
  C 
   Mainworld Size = 2D – 2 = 7 = 7,000 miles diameter. 
   Atmosphere = Flux + Size = +1 + 7 = 8 = Dense. 
   Hydrographics = Flux + Size = +1 + 7 = 8 = 80 of the world 
  surface is covered by seas. 
   Population = 2D – 2 = 8. Hundreds of millions. 
   Government = Flux + Pop = +1 + 8 = 9 = Impersonal 
  Bureaucracy.  
   Law Level = Flux + Gov = +0 + 9 = 9 = High Law.  
   Tech Level = 1D + Mods (Starport A = +6) = 4 + 6 = 10. 
  TL-10 = approximately 2100 AD. 
   
  D 
   Trade Classifications =  
    Rich (Atm=8, Pop=8). 
    Pre-Agricultural (Atm=8, Hyd=8, Pop=8). 
    Pre-High (Pop= 8). 
   
  E. 
   Importance Extension = { +4 } = Important. 
   = Starport A = +1, TL A = +1, Rich = +1, Pre-Ag = +1. 
   Economic Extension = ( A8B6 ) 
    Resources=  2D + GG + Belts = 7 + 3 + 0 = 10 = A. 
    Labor = Pop = 8. 
    Infrastructure = 2D + Importance = 7 + 4 = 11 = B. 
    Barriers = 2D - 2 = 6 
   Cultural Extension = [ 6C5C ] 
    Homogeneity = Pop + Flux = 8 -2 = 6. 
    Acceptance = Pop + Importance = 8 + 4 = 12 = C. 
    Strangeness = 2D – 2 = 5. 
    Symbols = TL + Flux = 10 + 2 = 12 = C.  
   
  F 
   Nobility = cCe = Baronet, a Baron, and a Viscount 
    Based on Rich, Pre-Ag, Pre-High. 
   Allegiance = Im =  a member world of the Imperium. 
   Bases = NS 
    Naval Base from the table. 2D = 5 = Yes. 
    Scout Base from the table. 2D = 3 = Yes. 
   Travel Zones. Imposed by the Referee. = None. 
   Native Status. Based on Pop 7 or greater and Atm 2 or 
  greater, the world has a Native population. 
   
   System Stars 
    The system automatically has a Primary. 
    Primary Companion = Flux = +4 = Yes. 
    Close Star = Flux = 0 = No. Near Star = Flux = -2 = No. 
    Far Star = Flux = +4 = Yes.  
    Far Star Companion = Flux = +1 = No. 
   The Regina system has a Primary and a Companion, and 
  a Far star in the remote system, and without a companion. 
   
   Stellar Data 
   Primary = F7 V. Primary Spectral Type = Flux = -1 = F. 
  Primary Spectral Decimal = use the Even Distribution Table 
  from Dice = 7. Primary Size = Flux = 0 and consult the 
  Spectral F column = V. 
   Primary Companion = DM. Companion Spectral Type = -1 
  + 1D-1 = 4 = M. Companion Decimal = 4. Companion Size = 
  Flux + 1D -1 +3 = +7 = D. Spectral decimal is ignored for 
  Size= D. 
   Far Star = M6 V. Spectral Type = Flux + 1D -1 = 0 + 3 = M. 
  Spectral Decimal = 6. Stellar Size = Flux + 1D -1 = 0 + 2 = 2 
  = V. 
   Place the Stars in orbits. The Primary is the central star of 
  the system. Its Companion orbits it inside Orbit 0. The Far 
  star is in orbit 11 + 1D = 11 + 5 = Orbit 16.  
   
  G 
   Total Worlds In The System = 1+ 3 + 0 + 2D = 1+ 3 + 0 + 8 
  = 12. 
   Mainworld. Regina is in the HZ. The Inner System 
  Reference map shows the HZ for the Primary F7 V is Orbit 4. 
  Because Regina is a Satellite, place a Gas Giant in Orbit 4. 
  Regin orbits the Gas Giant. 
   Gas Giants. The system has three Gas Giants. 
    The first Gas Giant has been placed in Orbit 4 of the 
  Inner System. Consult the GG Table for its details = 2D = 7 = 
  Siz S (80,000 miles diameter = about equal to Jupiter). It is a 
  Large Gas Giant LGG. 
    Place the second Gas Giant. HZ= 4. Consult the GG 
  Table for its details = 2 = Siz M (30,000 miles diameter). It is 
  a Small Gas Giant SGG. Consult the Basic Placement Chart 
  for SGG location = 2D = 2 = HZ-2. Place the GG in Orbit 4 -2 
  = Orbit 2.  
    Rotate placement of Gas Giants through the systems. 
    Place the third Gas Giant orbiting the M6 V Far star 
  (begin a new Inner System Fillform for the star). The HZ for 
  an M6 V is Orbit 0. Consult the GG Table for its details = 5 = 
  Siz Q (60,000 miles diameter). It is a Small Gas Giant SGG. 
  Convert it to an ice Giant. Consult the Basic Placement Chart 
  for IG location = 2D = 2 = HZ+2. Place the IG in Orbit 0 + 2 = 
  Orbit 2.  
   The system has no Planetoid Belts. 
   Create world 5 of the system’s 12. On World1 Column, 2D 
  = 5 = Orbit 4 = which becomes a Satellite of the Gas Giant in 
  Orbit 4. As a Satellite in Orbit 4, consult the HZ Hospitables 
  Satellite table = 1D = 4 = Hospitable. Determine its orbit from 
  the World and Orbits Table Chart B = Flux = -1 = Satellite 
  Orbit Eff. Create the Spaceport = Mainworld Pop -2D + 5 = 8 
  – 2 + 6 = 0 = Starport F. Create World Size = 2D -2 = 5.  
   Continue the process of world creation Atm=6 Hyd=4 Pop= 
  6 Gov = 6 Law = 9. TL = 6. 
   
  
SOURCE: textdata/thevault/Traveller/09 - Traveller5/Traveller5/T5 Underlying PDFs/T5=4200 SystemGen Chapter.pdf