Second Survey Data

The Traveller5 Second Survey format defines a standard for describing star systems in the Official Traveller Universe. It is composed of a series of fields describing various aspects of the Main World (MW) in each system including physical and cultural characteristics, and some details about other bodies in the system of interest to travellers.

The data for Regina (Spinward Marches 1910), home of Duke Norris and an influential world on the edge of the Third Imperium can be summarized in Second Survey format as:

Different editions of Traveller and different authors and publications may include different fields, present the fields in different orders, or provide different values for fields. The companion document Sector Data File Formats may be used for reference.


Hex Location

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The hexagon location of the world within a sector, given as a four digit number. The first two digits are the distance from the spinward edge in parsecs ranging from 01 through 32. The second two digits are the distance from the coreward edge in parsecs ranging from 01 through 40.

Main World Name

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Name of the primary world in the system. Most characteristics given in the UWP, such as physical and cultural attributes, refer to this world.

UWP - Universal World Profile

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The UWP gives a compact description of the physical and cultural aspects of the main world, as well the starport facilities and available technology. The fields are respectively:

Code Description
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.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Starport indicates the best quality starport in the star system.

Code Starport Description
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 Poor Quality. 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.
X No Starport. No provision is made for any ship landings.


Worlds other than the Main World in a system may also be described by UWP codes. The port, if any, is referred to as a spaceport.

Code Spaceport Description
F Good Quality. Minor damage repairable. Unrefined fuel available.
G Poor Quality. Superficial repairs possible. Unrefined fuel available.
H Primitive Quality. No repairs or fuel available.
Y None.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Size expresses the diameter of a world in approximately 1,600km units (or 1,000 mile units).

Size code 0 indicates that the main "world" of the system is an asteroid belt.

Size Diameter (km) Mass (Earth = 1) Area (Earth = 1) Gravity (G) Esc. Vel (km/s)
1 1,600 0.0019 0.015 0.122 1.35
2 3,200 0.015 0.063 0.240 2.69
3 4,800 0.053 0.141 0.377 4.13
4 6,400 0.125 0.250 0.500 5.49
5 8,000 0.244 0.391 0.625 6.87
6 9,600 0.422 0.563 0.840 8.72
7 11,200 0.670 0.766 0.875 9.62
8 12,800 1.000 1.000 1.000 11.00
9 14,400 1.424 1.266 1.120 12.35
A 16,000 1.953 1.563 1.250 13.73
B 18,800 2.600 1.891 1.375 15.34
C 19,200 3.375 2.250 1.500 16.74
D 20,800 4.291 2.641 1.625 18.13
E 22,400 5.359 3.063 1.750 19.52
F 24,000 6.592 3.516 1.875 20.92

The above table assumes a density similar to Earth (5.5 grams per cubic centimeter).


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Atmosphere type shows the general character of the atmosphere for a world on its surface.

Code Description
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.
5 Thin. Breathable.
6 Standard. Breathable.
7 Standard. Tainted. Requires filter mask.
8 Dense. Breathable.
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 Thin, low. Breathable below certain altitudes.
F Unusual.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Hydrographics shows the percentage of world surface covered by seas or oceans. If atmosphere type is A or above, fluid may be present in place of water.

Code Description
0 No water. Desert World.
1 10% water.
2 20% water.
3 30% water.
4 40% water.
5 50% water.
6 60% water.
7 70% water. Equivalent to Terra or Vland.
8 80% water.
9 90% water.
A 100% water. Water World.

Population Exponent

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The population exponent gives an order-of-magnitude approximation of a world's population. Together with the population multiplier digit in the PBG field, the world population can be computed as:

population = multiplier × 10exponent

Code Description
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.
B Hundreds of billions of inhabitants.
C Trillions of inhabitants.
D Tens of trillions of inhabitants.
E Hundreds of trillions of inhabitants.
F Quadrillions of inhabitants.

Government Type

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Government shows the basic governmental structure for a world.

Codes G and above were defined in the Classic Traveller alien modules for sophont-specific govenment types. Other editions of Traveller may define other values for certain codes.

Code Description Allegiance
0 No Government Structure.
1 Company/Corporation.
2 Participating Democracy.
3 Self-Perpetuating Oligarchy.
4 Representative Democracy.
5 Feudal Technocracy.
6 Captive Government / Colony.
7 Balkanization.
8 Civil Service Bureaucracy.
9 Impersonal Bureaucracy.
A Charismatic Dictator.
B Non-Charismatic Dictator.
C Charismatic Oligarchy.
D Religious Dictatorship.
E Religious Autocracy.
F Totalitarian Oligarchy.
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.
S Sept. Hiver.
T Unsupervised Anarchy. Hiver.
U Supervised Anarchy. Hiver.
W Committee. Hiver.
X Droyne Hierarchy. Droyne.

Traveller: The New Era

Worlds in the Wilds (allegiance code: Wi) use a different set of government codes.

Code Description
0 No Government Structure.
1 Tribal Government.
2 Participating Democracy.
3 Representative Democracy.
4 Charismatic Dictator.
5 Charismatic Oligarchy.
6 Technologically Elevated Dictator (TED).
7 Mystic Dictatorship.
8 Totalitarian Oligarchy.
9 Mystic Autocracy.
A Civil Service Bureaucracy.
B Self-Perpetuating Oligarchy.
C Impersonal Bureaucracy.

Law Level

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Law level indicates basic legal status and shows probability of harassment by local enforcers.

Code Description
0 No prohibitions.
1 Body pistols, explosives, and poison gas prohibited.
2 Portable energy weapons prohibited.
3 Machine guns, automatic rifles prohibited.
4 Light assault weapons prohibited.
5 Personal concealable weapons prohibited.
6 All firearms except shotguns prohibited.
7 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.
S Special/Variable situation.

Technological Level

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Technological level shows the degree of technological sophistication to be expected on a world.

Code Description
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.
A Interstellar community.
B Lower Average Imperial.
C Average Imperial.
D Above Average Imperial.
E Above Average Imperial.
F Technical Imperial Maximum.
G Robots.
H Artificial Intelligence.
J Personal Disintegrators.
K Plastic Metals.
L Comprehensible only as technological magic.

Remarks and Trade Codes

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Remarks and trade classifications indicate obvious or important characteristics for the main world in the system. 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.

AsAsteroid Belt.Siz 0
DeDesert.Atm 2-9, Hyd 0
FlFluid Hydrographics (in place of water).Atm A-C, Hyd 1+
GaGarden World.Siz 6-8, Atm 5,6,8, Hyd 5-7
HeHellworld.Siz 3+, Atm 2,4,7,9-C, Hyd 0-2
IcIce Capped.Atm 0-1, Hyd 1+
OcOcean World.Siz A+, Hyd A
VaVacuum World.Atm 0
WaWater World.Siz 3-A, Atm 3-9, Hyd A
DiDieback.PGL 0, TL 1+
BaBarren.PGL 0, TL 0
LoLow Population.Pop 1-3
NiNon-Industrial.Pop 4-6
PhPre-High Population.Pop 8
HiHigh Population.Pop 9+
PaPre-Agricultural.Atm 4-9, Hyd 4-8, Pop 4,8
AgAgricultural.Atm 4-9, Hyg 4-8, Pop 5-7
NaNon-Agricultural.Atm 3-, Hyd 3-, Pop 6+
PiPre-Industrial.Atm 0,1,2,4,7,9, Pop 7-8
InIndustrialized.Atm 0,1,2,4,7,9-C, Pop 9+
PoPoor.Atm 2-5, Hyd 3-
PrPre-Rich.Atm 6,8, Pop 5,9
RiRich.Atm 6,8, Pop 6-8
FrFrozen.Siz 2-9, Hyd 1+, HZ +2 or Outer
HoHot.HZ -1
CoCold.HZ +1
LkLocked.Close Satellite
TrTropic.Siz 6-9, Atm 4-9, Hyd 3-7, HZ -1
TuTundra.Siz 6-9, Atm 4-9, Hyd 3-7, HZ +1
TzTwilight Zone.Orbit 0-1
FaFarming.Atm 4-9, Hyd 4-8, Pop 2-6, Not MW, HZ
MiMining.Pop 2-6, Not MW, MW=In
MrMilitary Rule.By regional Allegiance power.
Mr(AAAA)Military Rule (by allegiance AAAA).
PxPrison, Exile Camp.MW
PePenal Colony.Not MW
CpSubsector Capital.
CsSector Capital.
CyColony (see O:XXYY).
FoForbidden (Red Zone).
PzPuzzle (Amber Zone).Pop 7+
DaDanger (Amber Zone).Pop 6-
AbData Repository.
AnAncient Site.
RsResearch Station.Imperial.
RsAResearch Station A = Alpha, B = Beta, G = Gamma, etc.Imperial.
O:XXYYControlled by world in hex XXYY.
O:SSSS-XXYYControlled by world in hex XXYY in sector SSSS.
[Sophont]Homeworld of major race.
(Sophont)Homeworld of minor race. 0-9 indicates tenths of population if < 100%.
Di(Sophont)Homeworld of extinct minor race (Dieback).
Soph0Sophont Population. Soph is an abbreviation for the sophont name. 0-9 indicates tenths of population; W is 100%, e.g. DroyW.
Non-Standard / Legacy Codes
S0Sophont Population. S is an abbreviation for the sophont name. 0-9 indicates tenths of population; w is 100%, e.g. Dw
NhNon-Hiver Population.Hiver.
NkNon-K’kree Population.K’kree.
TpTerra-prime. Adventure 5: Leviathan.
TnTerra-norm. Adventure 5: Leviathan.
LtLow Technology. Mongoose Publishing.
HtHigh Technology. Mongoose Publishing.
ExExile Camp.Imperial.
PrPrison World.Imperial.
XbXboat Station.Imperial.
CrReserve Capital.Zhodani.
S#Stellar companion orbits (F = far), e.g. S19 indicates companion stars are in orbits 1 and 9; SF1 indicates far companion is binary (companion in orbit 1)
{...}Other comments or annotations.

Sophont Codes

Notable populations of sophonts are present in the Remarks section. The species of sophont is identified using codes defined below.


The sophont code is a 4-character code which is selected to uniquely identify a sophont species in Charted Space.

AddaAddaxurZhodani space
AquaAquans (Daga)/​Aquamorphs (Alph)Daga (Aquans)/Alph (Aquamorphs)
BwapBwapsImperial/Vilani space
DolpDolphinsImperial/Solomani space
GurvGurvinHiver space
HiveHiverHiver space
HumaHuman (Vilani/​Solomani-mixed)Imperial/Solomani space
IthkIthklurHiver space
K'krK'kreeK'kree space
LamuLamura Gav/​TegHint
LlelLlellewyloly (Dandies)Spin
OrcaOrcaImperial/Solomani space
UApeUplifted ApesImperial/Solomani space
VargVargrAnta/Corr/Dagu/Dene/Empt/Ley/Lish/Spin/Vargr space
ZhodZhodaniZhodani space

Classic Traveller, MegaTraveller, Traveller: The New Era, Traveller: 4th Edition

Legacy sophont abbreviations include: A = Aslan, C = Chirper, D = Droyne, F = Non-Hiver Federation Member, H = Hiver, I = Ithklur, M = Human (e.g. in Vargr space), V = Vargr, X = Addaxur, Z = Zhodani.

Importance Extension

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The Importance Extension is abbreviated Ix and written in braces ({}). It is a decimal integer (positive, negative, or zero) ranking the importance of the world within a region.

Economic Extension

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The Economic Extension is abbreviated Ex and written in parentheses (()). It describes the strength of a world's economy. It is given as three eHex digits representing Resources, Labor and Infrastructure, followed by a decimal integer representing Efficiency written with a leading sign (zero is written as +0).

Cultural Extension

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The Cultural Extension is abbreviated Cx and written in brackets ([]). It gives insight into the social behavior of the world's population. It is given as four eHex digits representing Homogeneity, Acceptance, Strangeness, and Symbols.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

For Imperial worlds, the noble ranks assigned to the world by the Emperor based on importance.

If no noble ranks are assigned to the system, the field may be empty, a blank (space) or - (dash).

CodeRanking Noble
FSubsector Duke.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

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.

If no bases are present in the system, the field may be empty, a blank (space) or - (dash).

Base codes have changed significantly between different editions of Traveller. Sector data collections must indicate which set of codes are in use. Sector data collections may also define custom meanings for base codes.


Code Description Allegiance
C Corsair Base. Vargr.
D Naval Depot. Any.
E Embassy. Hiver.
K Naval Base. Any.
M Military Base. Any.
N Naval Base. Imperial.
R Clan Base. Aslan.
S Scout Base. Imperial.
T Tlaukhu Base. Aslan.
V Exploration Base. Any.
W Way Station. Any.

Multiple codes may be used if multiple bases are present. For example, NS indicates that the system contains both an Imperial Naval Base and an Imperial Scout Base. Base codes should appear in alphabetical order, i.e. MN rather than NM.

Classic Traveller, MegaTraveller, Traveller: The New Era, Traveller: 4th Edition

Code Description Allegiance
A Naval Base and Scout Base. Imperial.
B Naval Base and Way Station. Imperial.
C Corsair Base. Vargr.
D Depot. Imperial.
E Embassy Center. Hiver.
F Military and Naval Base.
G Naval Base. Vargr.
H Naval Base and Corsair Base. Vargr.
J Naval Base.
K Naval Base. K’kree
L Naval Base. Hiver.
M Military Base.
N Naval Base. Imperial.
O Naval Outpost. K’kree
P Naval Base. Droyne.
Q Military Garrison. Droyne.
R Clan Base. Aslan.
S Scout Base. Imperial.
T Tlauku Base. Aslan.
U Tlauku and Clan Base. Aslan.
V Scout/Exploration Base.
W Way Station. Imperial.
X Relay Station. Zhodani.
Y Depot. Zhodani.
Z Naval/Military Base. Zhodani.

Base codes indicate allegiance and general mission or type.

Travel Zone

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Codes assigned to the system by government or private institutions about the safety of travel within the system.

Worlds given a Green Zone rating are usually indicated by leaving the data field blank or - (dash).

Code Description
R Red. Interdicted. Dangerous. Prohibited. Imperial.
A Amber. Potentially dangerous. Caution advised. Imperial.
G Green. Unrestricted. Imperial.
B Blue. Balkanized — code is dominant government. TNE (circa 1201).
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. Worlds outside the Imperium should be considered Amber Zones by travellers from the Imperium.

PBG - Population, Belts, Giants

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Population Multiplier

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The first eHex digit is the population multiplier. Together with the population exponent in the UWP field, the world population can be computed as:

population = multiplier × 10exponent

Some legacy files may erroneously have 0 for the population multiplier but non-zero for the population exponent. Treat the multiplier as 1 in these cases.

Planetoid Belts

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The second eHex digit is the number of planetoid belts in the system. A main world of size 0 is termed an asteriod belt, and is not counted here.

Gas Giants

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The third eHex digit is the number of gas giants in the system, suitable for fuel skimming.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

The number of "worlds" in the system. This is given as a decimal integer, and will always be at least 1 (the main world) plus the number of planetoid belts (see PBG) plus the number of gas giants (see PBG) but will include other planets orbiting the star(s) in the system.


1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Allegiances indicate the government which dominates a system. A short abbreviation is used.


The allegiance code is a 4-character code which is selected to uniquely identify a polity in Charted Space.

3EoGThird Empire of GashikanMend/Gash/Tren
4WorFour WorldsFarf
AkUnAkeena UnionGate
AlCoAltarean ConfederationVang
AnTCAnubian Trade CoalitionHint
AsIfIyeaao'fte (Tlaukhu client state)Ustr
AsMwAslan Hierate, single multiple-world clan dominatesAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr/Verg
AsOfOleaiy'fte (Tlaukhu client state)Ustr
AsScAslan Hierate, multiple clans split controlAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsSFAslan Hierate, small facility (temporary)
AsT0Aslan Hierate, Tlaukhu control, Yerlyaruiwo (1), Hrawoao (13), Eisohiyw (14), Ferekhearl (19)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT1Aslan Hierate, Tlaukhu control, Khauleairl (2), Estoieie' (16), Toaseilwi (22)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT2Aslan Hierate, Tlaukhu control, Syoisuis (3)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT3Aslan Hierate, Tlaukhu control, Tralyeaeawi (4), Yulraleh (12), Aiheilar (25), Riyhalaei (28)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT4Aslan Hierate, Tlaukhu control, Eakhtiyho (5), Eteawyolei' (11), Fteweyeakh (23)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT5Aslan Hierate, Tlaukhu control, Hlyueawi (6), Isoitiyro (15)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT6Aslan Hierate, Tlaukhu control, Uiktawa (7), Iykyasea (17), Faowaou (27)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT7Aslan Hierate, Tlaukhu control, Ikhtealyo (8), Tlerfearlyo (20), Yehtahikh (24)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT8Aslan Hierate, Tlaukhu control, Seieakh (9), Akatoiloh (18), We'okunir (29)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsT9Aslan Hierate, Tlaukhu control, Aokhalte (10), Sahao' (21), Ouokhoi (26)Akti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsTATealou Arlaoh (Aslan independent clan, non-outcast)Uist/Ustr
AsTvAslan Hierate, Tlaukhu vassal clan dominatesAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsTzAslan Hierate, Zodia clan (Tralyeaeawi vassal)Iwah
AsVcAslan Hierate, vassal clan dominatesAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsWcAslan Hierate, single one-world clan dominatesAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
AsXXAslan Hierate, unknownAkti/Dark/Eali/Hlak/Iwah/Reav/Rift/Stai/Troj/Uist/Ustr
BiumThe BiumvirateFarf
BlSoBelgardian SojurnateTroj
CaAsCarrillian AssemblyReav
CAEMComsentient Alliance, Eslyat MagistracyBeyo/Vang
CAinComsentient Alliance, independentVang
CAKTComsentient Alliance, Kajaani TriumverateVang
CaPrPrincipality of CaledonReav
CaTeCarter TechnocracyReav
CoBaConfederation of BammesukaMend
CoLpCouncil of Leh PerashHint
CsCaClient state, Principality of CaledonReav
CsHvClient state, Hiver FederationCruc/Spic
CsImClient state, Third Imperiumvarious
CsMPClient state, Ma'Gnar PrimarchicBeyo
CsTwClient state, Two Thousand Worldsvarious
CsZhClient state, Zhodani ConsulateSpin/Troj
CyUnCytralin UnityHint
DaCfDarrian ConfederationSpin
DeHgDescarothe HegemonyFarf
DeNoDemos of NoblesNewo
DiGrDienbach GrüpenNewo
DiWbDie WeltbundBeyo
DoAlDomain of AlntzarFarf
DuCfConfederation of DuncinaeReav
FCSAFour Corners Sovereign ArrayVang
FeAlFederation of AlsasFarf
FeAmFederation of AmilCruc
FeHeFederation of HeronGlim
FlLeFlorian LeagueTroj
GaFdGalian FederationGate
GaRpGamma RepublicGlim
GdKaGrand Duchy of KalradinCruc
GdMhGrand Duchy of MarlheimReav
GdStGrand Duchy of StonerGlim
GeOrGerontocracy of OrmineDark
GlEmGlorious Empire (Aslan independent clan, outcast)Troj
GlFeGlimmerdrift FederationCruc/Glim
GnClGniivi CollectiveHint
GrCoGrossdeutchland ConfederationVang
HaCoHaladon CooperativeFarf
HoPAHochiken People's AssemblyGate
HvFdHiver FederationSpic
HyLeHyperion LeagueVang
IHPrI'Sred*Ni ProtectorateBeyo
ImApThird Imperium, Amec ProtectorateDagu
ImDaThird Imperium, Domain of AntaresAnta/Empt/Lish
ImDcThird Imperium, Domain of SyleaCore/Delp/Forn/Mass
ImDdThird Imperium, Domain of DenebDene/Reft/Spin/Troj
ImDgThird Imperium, Domain of GatewayGlim/Hint/Ley
ImDiThird Imperium, Domain of IlelishDaib/Ilel/Reav/Verg/Zaru
ImDsThird Imperium, Domain of SolAlph/Dias/Magy/Olde/Solo
ImDvThird Imperium, Domain of VlandCorr/Dagu/Gush/Reft/Vlan
ImLaThird Imperium, League of AntaresAnta
ImLcThird Imperium, Lancian Cultural RegionCorr/Dagu/Gush
ImLuThird Imperium, Luriani Cultural AssociationLey/Forn
ImSyThird Imperium, Sylean WorldsCore
ImVdThird Imperium, Vegan Autonomous DistrictSolo
IsDoIslaiat DominateEali
JAOzJulian Protectorate, Alliance of OzuvonMend
JaPaJarnac PashalicBeyo/Vang
JAsiJulian Protectorate, Asimikigir ConfederationAmdu/Mend
JCoKJulian Protectorate, Constitution of KoekhonAmdu/Mend
JHhkJulian Protectorate, Hhkar SphereAmdu/Mend
JLumJulian Protectorate, Lumda DowerMend
JMenJulian Protectorate, Commonwealth of MendanMend/Gash
JPStJulian Protectorate, Pirbarish StarlaneMend
JRarJulian Protectorate, Rar Errall/Wolves WarrenMend
JuHlJulian Protectorate, Hegemony of LoreanAmdu/Empt/Mend
JUkhJulian Protectorate, Ukhanzi CoordinateMend
JuNaJurisdiction of NadonCano
JuPrJulian Protectorate, independentAmdu/Empt/Mend
JuRuJulian Protectorate, Rukadukaz RepublicEmpt/Mend
JVugJulian Protectorate, Vugurar DominionMend
KaCoKatowice ConquestCruc
KaWoKarhyri WorldsCruc
KhLeKhuur LeagueLey
KkTwTwo Thousand Worlds (K'kree)various
KoEmKorsumug EmpireThet
KoPmPercavid MarchesThet
KPelKingdom of PeladonThet
LaCoLangemarck CoalitionVang
LeSuLeague of SunsFarf
LnRpLoyal Nineworlds RepublicGlim
LyCoLanyard ColoniesReav
MaClMapepire ClusterBeyo
MaEmMaskai EmpireGlim
MaPrMa'Gnar PrimarchicBeyo
MaUnMalorn UnionCano/Alde
MeCoMegusard CorporateGate
MiCoMische ConglomerateCruc
MnPrMnemosyne PrincipalityFarf
MrCoMercantile ConcordCruc
NaAsNon-Aligned, Aslan-dominated (outside Hierate)Akti/Dark/Eali/Rift/Uist/Ustr
NaHuNon-Aligned, Human-dominatedvarious
NaVaNon-Aligned, Vargr-dominatedvarious
NaXXNon-Aligned, unclaimedvarious
OcWsOutcasts of the Whispering SkyHint
OlWoOld WorldsCruc
PiFePionier FellowshipVang
PlLePlavian LeagueGate
ProtThe ProtectorateFarf
RaRaRal RantaHint
ReacThe ReachCruc
ReUnRenkard UnionGate
SaCoSalinaikin ConcordanceFarf
SarkSarkan ConstellationMend
SeFoSenlis FoederateTroj
SlLgShukikikar LeagueGlim
SoBFSolomani Confederation, Bootean FederationSolo
SoCfSolomani ConfederationAlph/Diab/Dark/Hint/Magy/Olde/Reav/Solo/Spic/Ustr
SoCTSolomani Confederation, Consolidation of TurinAlph
SoFrSolomani Confederation, Third Reformed French Confederate RebublicAlde
SoHnSolomani Confederation, Hanuman SystemsLang
SoKvSolomani Confederation, Kostov Confederate RepublicNewo
SoNSSolomani Confederation, New Slavic SolidarityMagy
SoQuSolomani Confederation, Grand United States of QuesadaAlde
SoRDSolomani Confederation, Reformed Dootchen EstatesMagy
SoWuSolomani Confederation, Wuan Technology AssociationDiab/Magy
StClStrend ClusterTroj
SwCfSword Worlds ConfederationSpin
SwFWSwanfei Free WorldsGate
SyReSyzlin RepublicCruc
TeClTellerian ClusterVang
TrBrTrita BrotherhoodCano
TrCoTrindel ConfederacyGate
TrDoTrelyn DomainVang/Farf
TroCTrooles ConfederationThet
UnGaUnion of GarthFarf
UnHaUnion of HarmonyDark/Reav
V17D17th DisjuctureMesh/Wind
V40S40th Squadron (Ekhelle Ksafi)Gvur
VAnPAntares PactMesh/Mend
VARCAnti-Rukh Coalition (Gnoerrgh Rukh Lloell)Gvur
VAugUnited Followers of AugurghDene/Tugl
VBkABakne AllianceTugl
VCKdCommonality of Kedzudh (Kedzudh Aeng)Gvur
VDrNDrr'lana NetworkGash
VDzFDzarrgh FederateDene/Prov/Tugl
VFFDFirst Fleet of DzoMesh
VGoTGlory of TaarskoerznProv
ViCoViyard ConcourseGate
VIrMIrrgh ManifestProv
VJoFJihad of FaarzgaenProv
VLInLlaeghskath InteracterateProv/Tugl
VLPrLair ProtectorateProv
VNgCNgath ConfederationWind
VOppOpposition AllianceMesh
VPGaPact of Gaerr (Gaerr Thue)Gvur
VRo5Ruler of FiveMesh
VRrSRranglloez StrongholdTugl
VRukWorlds of Leader Rukh (Rukh Aegz)Gvur
VSDpSaeknouth Dependency (Saeknouth Igz)Gvur
VSEqSociety of Equals (Dzen Aeng Kho)Gvur/Tugl
VThEThoengling Empire (Thoengling Raghz)Gvur/Tugl
VTrATrae AggregationTren
VTzEThirz Empire (Thirz Uerra)Gvur/Ziaf
VVarEmpire of VarroerthProv/Tugl/Wind
VVoSVoekhaeb SocietyMesh
VWanPeople of WanzTugl
VWP2Windhorn Pact of TwoTugl
VYoeUnion of YoetyqqGash
WiDeWinston DemocracyAlde/Newo
ZePrZelphic PrimacyFarf
ZhAxZhodani Consulate, Addaxur ReserveTien
ZhCaZhodani Consulate, Colonnade ProvinceVang/Farf
ZhChZhodani Consulate, Chtierabl ProvinceChti
ZhCoZhodani Consulate, undeterminedvarious
ZhIaZhodani Consulate, Iabrensh ProvinceStia/Zdie
ZhINZhodani Consulate, Iadr Nsobl ProvinceFarf/Fore/Gvur/Spin/Yikl/Ziaf
ZhJpZhodani Consulate, Jadlapriants ProvinceTien/Zhda
ZhMeZhodani Consulate, Meqlemianz ProvinceEiap/Sidi/Eiap
ZhObZhodani Consulate, Obrefripl Provincevarious
ZhShZhodani Consulate, Shtochiadr ProvinceItvi/Tlab
ZhVQZhodani Consulate, Vlanchiets Qlom Provincevarious
ZuugZuugabish TripartiteMend
ZyCoZydarian CodominionBeyo

Classic Traveller, MegaTraveller, Traveller: The New Era, Traveller: 4th Edition

Older versions of Traveller use a 2-character code. Due to the limited number of useful 2-character codes, these are not unique across Charted Space.

Code Description
As Aslan (general designation).
A0 Aslan Tlauku Clan (numbers 0-9 indicate Tlauku clan).
Cs Client State (usually of the Imperium).
Dr Droyne.
Hv Hive Federation.
Im Imperium.
Kk The Two Thousand Worlds (K’kree).
Na Non-Aligned (independent neutral world without affiliation).
So Solomani Confederation.
Va Vargr (general designation).
Vx Vargr (2nd digit 0-9 or letter a-z indicates specific allegiance)
Zh Zhodani Consulate.
Wi Wilds (Traveller: The New Era).
-- Empty, unclaimed system.

Stellar Data

1910 Regina A788899-C Ri Pa Ph An Cp (Amindii)2 { 4 } (D7E+4) [9C6D] BcCeF NS - 703 8 ImDd F7 V BD M3 V

Stellar Data indicates the spectral and luminosity class of each star in the system. This uses a subset of the Morgan–Keenan classification system (also known as Yerkes or MKK), such as G2 V where G2 is the color/temperature (210th of the way from yellow G to orange K on the spectrum) and V is the luminosity/size (main sequence).

Stellar Spectral Class

Code Description Temperature (K)
O Blue >33,000
B Blue-White 10,000-33,000
A Blue-White 7,500-10,000
F Yellow-White 6,000-7,500
G Yellow 5,200-6,000
K Orange 3,700-5,200
M Red 2,000-3,700

Stellar type indicates the spectral classification of a star; colors are the essential perceived colors of the star’s visible light.

Stellar Luminosity

The luminosity gives the magnitude, or brightness of the star. This correlates with the size of the star, although it varies depending on spectral class.

Code Description Diameter (Sol = 1)
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
D White Dwarf. 0.006 - 0.018

Classic Traveller, MegaTraveller, Traveller: The New Era, Traveller: 4th Edition

White dwarf stars are represented by the size code D, optionally followed by a spectral code, e.g. DB, DA, DF, DG, DK, DM. (Note: This differs significantly from real-world classification of white dwarf stars.)

Some files may use luminosity code VII for white dwarf stars instead.

The special code BH may be used for black holes.


White dwarf stars are represented by the size code D with no spectral code.

The special code BD may be used for brown dwarf, sub-stellar objects.

eHex - Extended Hexadecimal

Traveller encodes numbers using "extended hexadecimal", which is really a way of encoding numbers larger than 9 into a single printable character. Numbers in the range 0-9 are represented as 0-9 as normal. Like hexadecimal, values in the range 10-15 are represented as A-F (always uppercase). But the encoding continues for values in the range 16-17 as G-H, 18-22 as J-N, and 23-30 as P-W.

Codes X, Y and Z may be used for 31-33 or may be reserved for exceptional values. Code X, in particular, is reserved for unknown values, such as the details of intentionally unexplored systems. Codes I and O are unused to avoid confusion with 1 and 0.

eHex Decimal
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
A 10
B 11
C 12
D 13
E 14
F 15
G 16
H 17
J 18
K 19
L 20
M 21
N 22
P 23
Q 24
R 25
S 26
T 27
U 28
V 29
W 30
X 31*
Y 32*
Z 33*

The Traveller game in all forms is owned by Far Future Enterprises. Copyright © 1977 – 2017 Far Future Enterprises. Fair Use Policy