Original Publication: Miller, Marc W.
Exploring the Traveller Universe, Challenge Magazine, Issue No. 26, pp.24-25.
Editor's Notes: This document is
a compilation of basic data from a variety
of Traveller sources for the interpretation of world data codes.
It accompanied an article and sample code describing the first
standardized format for Traveller UWP data interchange, and is presented
Since the original publication of Traveller the term Universal Planetary Profile (UPP) has gradually been replaced with Universal World Profile (UWP) to disambiguate from Universal Personality Profile (UPP). Circa 2009, most extant documentation refers to UWP exclusively.
Many changes have been proposed or introduced to later de-facto updates to the format since the original publication, most notably the inclusion of world names as an initial field, and PBG codes which provide the Population Multiplier, number of Asteroid Belts, and number of Gas Giants respectively, replacing the simple G code for Gas Giants. Many other codes have been introduced, and the trade classification/remarks field is generally considered extensible.
Errata: The allegiance codes Jl and Jr appear to be swapped; Jr was the
allegiance code used for the Julian Protectorate in Atlas of the Imperium,
although this may also represent a later change. Trade classification codes nAg and
nIn violate the clause
up to five 2-letter trade classifications;
although nAg and nIn are found in print, all electronic files have used Na and Ni respectively.
The Standard UPP Format for worlds saves basic data generated in accordance with world generation rules in Traveller.
All data for a sector is contained in one file (if disk space or available memory precludes it all being in one file, two or more may be necessary). Each record in the file is one world UPP.
Each record is divided into six fields:
Hex Location: Bytes 1-4. The hexagon location of the world within a sector map. Values range from 0101 to 3240.
UPP: Bytes 6-14. The actual generated UPP. Byte 6 is starport type; byte 7 is world size; byte 13 is always a hyphen (-); byte 14 is tech level.
Bases: Byte 16. A single code letter for any bases in the system.
Trade Classifications: Bytes 18-32. Up to five 2-letter trade classifications can be held in this field. Each classification is separated from the others by a space. If it possible to generate some of these trade classifications from the world UPP, but they are computed and included as part of the world data to allow quick scanning and analysis of the data.
Allegiance: Bytes 33-34. A 2-letter code for the interstellar government which claims the allegiance of the world.
Travel Zone: Byte 36. If the world is travel zoned, then this field holds the letter A (for Amber) or R (for Red).
Gas Giant: Byte 38. If the system has one or more gas giants, then this field has a G.
Tradeworld: Byte 40. Reserved for later use.
Explored?: Byte 42. Reserved for later use.
The information produced by the Imperial Interstellar Scout Service is provided in specific formats in order to allow quick and easy access to the data.
Data is grouped by Sectors, corresponding to sectors of the Imperium and of surrounding space.
Data Codes: The data in the UPP and in associated fields is coded to hold the maximum amount of information. This guide shows the basic interpretation of the codes used.
World UPPs (Universal Planetary Profiles) are constructed of eight discrete digits or characters in order to provide a quick readout of the basic information about the world. Each segment of the UPP is one digit or character. The data is presented in the following order:
|Starport||Type of starport facility on world.|
|Size||World diameter (in units of 1,600 kilometers).|
|Atmosphere||World atmosphere type.|
|Hydrographics||World surface covered with water (in tenths).|
|Population||Exponent of intelligent population.|
|Government||World government type.|
|Law Level||Degree of oppression by law.|
|Technological Level||Level of technological achievement.|
|A||Excellent Quality. Refined fuel available. Annual maintenance overhaul available. Shipyard capable of constructing starships and non-starships present. Nava base and/or scout base may be present.|
|B||Good Quality. Refined fuel available. Annual maintenance overhaul available. Shipyard capable of constructing non-starships present. Naval base and/or scout base may be present.|
|C||Routine Quality. Only unrefined fuel available. Reasonable repair facilities present. Scout base may be present.|
|D||Only unrefined fuel available. No repair facilities present. Scout base may be present.|
|E||Frontier Installation. Essentially a marked spot of bedrock with no fuel, facilities, or bases present.|
|F||No Starport. No provision is made for any ship landings.|
Starport indicates the best quality starport in the star system.
Size is the size code from the Universal Planetary Profile (UPP) and expresses the diameter of a world in approximately 1,600 km units (or 1,000 mile units). Diameter is in kilometers. Mass is in Earths (Earth=1) and assumes a density similar to Earth (5.5 grams per cubic centimeter). Area is in Earths (Earth=1). Gravity is in Gs (Earth=1). Escape velocity is in km per sec.
|0||No atmosphere. Requires vacc suit.|
|1||Trace. Requires vacc suit.|
|2||Very thin. Tainted. Requires combination respirator/filter.|
|3||Very thin. Requires respirator.|
|4||Thin. Tainted. Requires filter mask.|
|7||Standard. Tainted. Requires filter mask.|
|9||Dense. Tainted. Requires filter mask.|
|A||Exotic. Requires special protective equipment.|
|B||Corrosive. Requires protective suit.|
|C||Insidious. Requires protective suit.|
|D||Dense, high. Breathable above a minimum altitude.|
|E||Ellipsoid. Breathable at certain latitudes.|
|F||Thin, low. Breathable below certain altitudes.|
Atmosphere type shows the general character of the atmosphere for a world on its surface.
|0||No water. Desert World.|
|7||70% water. Equivalent to Terra or Vland.|
|A||100% water. Water World.|
Hydrographics shows the percentage of world surface covered by seas or oceans.
Note: If atmosphere type is A or above, fluid may be present in place of water.
|0||Few or no inhabitants.|
|1||Tens of inhabitants.|
|2||Hundreds of inhabitants.|
|3||Thousands of inhabitants.|
|4||Tens of thousands of inhabitants.|
|5||Hundreds of thousands of inhabitants.|
|6||Millions of inhabitants.|
|7||Tens of millions of inhabitants.|
|8||Hundreds of millions of inhabitants.|
|9||Billions of inhabitants.|
|A||Tens of billions of inhabitants.|
Population shows a rough statement of population level for a world.
|0||No Government Structure.|
|8||Civil Service Bureaucracy.|
|G||Small Station or Facility.||Aslan.|
|H||Split Clan Control.||Aslan.|
|J||Single On-world Clan Control.||Aslan.|
|K||Single Multi-world Clan Control.||Aslan.|
|L||Major Clan Control.||Aslan.|
|M||Vassal Clan Control.||Aslan.|
|N||Major Vassal Clan Control.||Aslan.|
|P||Small Station or Facility.||K’kree.|
|Q||Krurruna or Krumanak Rule for Off-world Steppelord.||K’kree.|
|R||Steppelord On-world Rule||K’kree.|
Government shows the basic governmental structure for a world.
|1||Body pistols, explosives, and poison gas prohibited.|
|2||Portable energy weapons prohibited.|
|3||Machineguns, automatic rifles prohibited.|
|4||Light assault weapons prohibited.|
|5||Personal concealable weapons prohibited.|
|6||All firearms except shotguns prohibited.|
|8||Long bladed weapons controlled; open possession prohibited.|
|9||Possession of weapons outside the home prohibited.|
|A||Weapon possession prohibited.|
|B||Rigid control of civilian movement.|
|C||Unrestricted invasion of privacy.|
|D||Paramilitary law enforcement.|
|E||Full-fledged police state.|
|F||All facets of daily life regularly legislated and controlled.|
|G||Severe punishment for petty infractions.|
|H||Legalized oppressive practices.|
|J||Routinely oppressive and restrictive.|
|K||Excessively oppressive and restrictive.|
|L||Totally oppressive and restrictive.|
Law level indicates basic legal status and shows probability of harassment by local enforcers.
|0||Stone Age. Primitive.|
|1||Bronze, Iron.||Bronze Age to Middle Ages|
|2||Printing Press.||circa 1400 to 1700.|
|3||Basic Science.||circa 1700 to 1860.|
|4||External Combustion.||circa 1860 to 1900.|
|5||Mass Production.||circa 1900 to 1939.|
|6||Nuclear Power.||circa 1940 to 1969.|
|7||Miniaturized Electronics.||circa 1970 to 1979.|
|8||Quality Computers.||circa 1980 to 1989.|
|9||Anti-Gravity.||circa 1990 to 2000.|
|B||Lower Average Imperial.|
|D||Above Average Imperial.|
|E||Above Average Imperial.|
|F||Technical Imperial Maximum.|
|L||Comprehensible only as technological magic.|
Technological level shows the degree of technological sophistication to be expected on a world.
Stellar Data indicates the spectral class and size class of stars in the system. Up to three stars may be present and information shown on them.
Stellar type indicates the spectral classification of a star; colors are the essential perceived colors of the star’s visible light. Temperature is given in degrees Kelvin.
|Ia||Bright Supergiant.||52 - 3500|
|Ib||Weak Supergiant.||30 - 3000|
|II||Bright Giant.||14 - 1000|
|III||Normal Giant.||4.6 - 360|
|IV||Subgiant.||3.3 - 13|
|V||Main Sequence Star.||0.2 - 10|
|VI||Subdwarf.||0.1 - 1.2|
|VII||White Dwarf.||0.006 - 0.018|
Stellar size indicates the radius of the star expressed in solar radii and shows the relative differences to be expected.
Base codes show the presence of military bases in a system; special codes deal with the presence of more than one type of base within the same system in order to maintain a single base code letter per system.
|A||Naval Base and Scout Base.||Imperial.|
|B||Naval Base and Way Station.||Imperial.|
|F||Military and Naval Base.|
|H||Naval Base and Corsair Base.||Vargr.|
|U||Tlauku and Clan Base.||Aslan.|
Base codes indicate allegiance and general mission or type.
Trade classifications indicate obvious or important characteristics for worlds defined by the world UPP. They serve to show the potential for a world based on its capacity as a source of trade goods, a market for trade goods, or both.
|Fl||Fluid Hydrographics (in place of water).|
|C0||Chirper Population (0-9 indicates tenths of population).|
|Cx||Sector or Regional Capital.|
|D0||Droyne Population (0-9 indicates tenths of population).|
Remarks are additional statements not considered to be trade classifications.
The additional data fields show the travel status (when known), the presence of a gas giant, and the allegiance of the system.
|R||Red. Interdicted. Dangerous. Prohibited.||Imperial.|
|A||Amber. Potentially dangerous. Caution advised.||Imperial.|
|F||Forbidden. Access prohibited.||Zhodani.|
|U||Unabsorbed. Access restricted.||Zhodani.|
Imperial travel codes are provided by the Journal of the Travellers’ Aid Society, and are used with permission of that publication.
Gas Giants: The code G indicates one or more gas giants present.
|Code||Description||Sector (if less than one)|
|As||Aslan (general designation).|
|A0||Aslan Tlauku Clan (numbers 0-9 indicate Tlauku clan).|
|A-||Aslan Clan (2nd letter a through z indicates specific clan).|
|Cs||Client State (usually of the Imperium).|
|Fa||Federation of Arden.||Spinward Marches.|
|Gl||Glorious Empire.||Trojan Reach.|
|Jr||Joint Action Confederation.||Empty Quarter.|
|La||League of Antares.||Antares.|
|Na||Non-Aligned (independent neutral world without affiliation).|
|Sf||Senlis Foederate.||Trojan Reach.|
|Sw||Sword Worlds.||Spinward Marches.|
|Va||Vargr (general designation).|
|V-||Vargr (2nd letter a to z indicates specific allegiance).|
|Ve||Vegan Autonomous District.||Solomani Rim.|
|Z-||Zhodani (2nd letter a to z indicates specific allegiance.).|
Allegiances indicate the government which dominates a system. Only selected allegiances are shown in this table.
References: The Traveller Book (GDW: 1982). Scouts, Traveller Book 6 (GDW: 1984). Merchant Prince, Traveller Book 7. Aslan, Alien Module 1 (GDW: 1984). K’kree, Alien Module 2 (GDW: 1984). Vargr, Alien Module 3 (GDW: 1984). Zhodani, Alien Module 4 (GDW: 1985). Droyne, Alien Module 5 (GDW: 1985). Solomani, Alien Module 6 (GDW: 1986). Hivers, Alien Module 7 (GDW: 1986).
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