Universal World Profile

The Universal World Profile (UWP) is a set of codes describing the qualities and characteristics of a world.

• In some older, early Imperial circles, it has been known as the UPP or Universal Planetary Profile.

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Please see the following AAB Library Data articles for more information:

• Observing Charted Space
  • Universal World Profile (UWP)
    • Starport (Sp)
    • Planetary Size (S)
    • Atmosphere (A)
    • Hydrosphere (H)
    • Population (P)
    • Government (G)
    • Law Level (L)
    • Tech Level (TL)
  • PBG Sequence
    • P: Pop Multipliers
    • B: Belts
    • G: Gas Giants
    • TZ: Travel Zone
  • COG Sequence
    • C: Climate
    • O: Orbit
    • G: Gravity
  • Other System Data
    • Allegiance Code (AC)
    • Base Code (BC)
    • Cultural Extension (Cx)
    • Economic Extension (Ex)
    • Importance Extension (Ix)
    • Sophont Code
    • Trade Classification (TC)

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Description (Specifications)

The below table shows typical astrography and UWP data for a world:

UWP Typical Format under T5SS
Name	Hex	Physical Stats	Base Code/s	Trade Classifications	Extended Stats	Allegiance Code
Roup	0407	C77A9A9-6	S	Hi In Wa	A323	Im or ImDa (2 or 4 digit)

Thus the planet Roup is located in hex 0407 in the sector, it has physical stats of C77A9A9-6, a base code of S(cout) and has trade classification of "Hi In Wa", the extended data is A323, and has allegiance to the Im(perium).

The extended stats include:

• TZ: Travel Zone: A (amber)
• P: Pop Multiplier: (x2)
• B: Belt/s: (x2)
• G: Gas Giant/s: (x3)

Basic UWP Stats

Physical Stats (...the entire sequence):

• Sp: Starport

SAH Sequence (planetology):

• S: Planetary Size (Size)
• A: Atmosphere
• H: Hydrosphere

PGL Sequence (socioeconomics):

• P: Population
• G: Government
• L: Law level

TL (technology):

• TL: Tech level

UWP Format Dictionary

#	Category	Explanation	Remarks
1.	Starport	A Starport is an establishment for the landing, servicing, refueling, launching, and control of starships. Starports range in quality from A (the best and most extensive) to E (the worst, little more than a spot of cleared ground), and X. A secondary set of spaceport ratings includes F, G, H, and Y.	Stand-alone qualifier.
2.	Size	Worlds are classified according to their physical size (Planetary Size). Only Mainworlds (worlds or planets) of interest are recorded. Planetary size and density are the two strongest indicators of surface gravity parameters. e.g. Gas Giants are simply classified as Small (SGG) or Large (LGG).	Part of SAH sequence.
3.	Atmosphere	The Atmosphere code is a UWP code to represent the breathing environment encountered on the world. It represents the mixture of gases and other elements that may be present on a world (planet). Atmosphere greatly affects the habitability of a world.	Part of SAH sequence.
4.	Hydrographics	The Hydrosphere represents (Hydrographics) or the liquid content of a world, usually water on a conventional life-supporting world (planet). For normal worlds, the hydrosphere will be water; on other worlds with exotic, corrosive, or insidious atmospheres, it may be other liquids or fluids such as ammonia.	Part of SAH sequence.
5.	Population	The Population UWP code is an indicator of the world's population of Sophonts. This figure represents the exponent (number of zeros) which follow the first population digit (this digit is outlined in the extended data). High Population worlds are generally shown in all caps (e.g. ROUP) on sector/subsector maps.	Part of PGL sequence.
6.	Government	Government is the method by which a subplanetary (...smaller than a world), planetary (world), or interstellar (multi-system) state or community, leads (governs) itself. Standard UWP codes exist to explain most of the most common government types. The study of governments, governance, and other related subjects is known as political science, a type of social science.	Part of PGL sequence.
7.	Law level	Law Level is an indication of the relative oppressiveness of the world (planet) of whom the law serves more: the inhabitants (...and visitors) [distributed power] or the government and politicians of a planet (...or polity) [centralized power]. The more centralized or autocratic a government (polity) is, the more likely the higher laws codes will be more oppressive. The less centralized or more distributed a government (polity) is, the more likely the lower laws codes will be more democratic.	Part of PGL sequence.
8.	Tech level	Technology Level or Tech Level, commonly abbreviated TL, is a measure of technological capability. Usually this is used in the Universal world profile to indicate the overall technology of the planet. A planet may have large sections, and/or populations at a more primitive or advanced level than listed.	Stand-alone qualifier.

Extended UWP Stats

The Expanded UWP Stats for a system may include:

COG Sequence (habitability):

• C: Climate (...tolerable or not)
• O: Orbit (...in HZ or not)
• G: Gravity (...tolerable or not)

Other System Data

• Allegiance Code (AC)
• Base Code (BC)
• Cultural Extension (Cx)
• Economic Extension (Ex)
• Gas Giant/s (G)
• Importance Extension (Ix)
• Belt/s (B)
• Population Multiplier (P)
• Trade Classification (TC)
• Travel Zone

History & Background (Dossier)

Systems information is also available as full astrographic charts (holocrystal), or the summarized Extended System Profile which does not have projected orbital postions, navigational and approach codes and frequencies.

Stars

Stars are literally the center of any stellar system and while not directly noted in the UWP, they are listed in a standard T5SS planetary description as indicated on all star charts for millennia.

• Stars are notated with a type and intensity: e.g. M5 V
  • M5 is a red giant star
  • V is the intensity or brightness.

Gas Giants

Gas Giants are very important to starfarers because they are one of the best sources of fuel if present within a Star System.

• Systems without gas giants may become important defensive positions for interstellar navies.
• Two codes, SGG and LGG, are in common use by everyday starfarers, although scientists and astrographers often use far more complex codes.

UWP System Format Non-Mainworld

Code	Expanded	Remarks
LGG	Large Gas Giant	Not for mainworlds.
SGG	Small Gas Giant	Not for mainworlds.

References & Contributors (Sources)

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.

• This article is an amalgamation of many different materials published since 1977.
• Marc Miller. Worlds and Adventures (Game Designers Workshop, 1977), TBD.Marc Miller, Robert Eaglestone, Don McKinney. Worlds and Adventures (Far Future Enterprises, 2019), TBD.
• Gary L. Thomas. Grand Census (Digest Group Publications, 1987), TBD.
• Joe Fugate. Grand Survey (Digest Group Publications, 1986), TBD.
• Marc Miller. Referee's Manual (Game Designers Workshop, 1987), TBD.
• Geir Lanesskog. World Builder's Handbook (Mongoose Publishing, 2023), TBD.Joe Fugate, J. Andrew Keith, Gary L. Thomas. World Builder's Handbook (Digest Group Publications, 1989), TBD.
• Terrance McInnes, Dave Nilsen. World Tamer's Handbook (Game Designers Workshop, 1994), TBD.
• Frank Chadwick, Dave Nilsen. Traveller: The New Era (Game Designers Workshop, 1993), TBD. (pg. 180)
• Paul Elliott. The Universal World Profile (Zozer Games, 2016), TBD.
• Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), TBD.
• Traveller Wiki Editorial Team
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science