Name

Name

The body's designation or proper name.

Orbital

Orbit

Orbital radius as an orbit number. Must be at or beyond the parent star's minimum allowable orbit.

Period

Orbital period around the parent body.

Retrograde

Enable if the body orbits opposite to the primary star's rotation.

Rotation

Sidereal rotation period in hours.

Inclination

Orbital plane inclination in degrees.

Eccentricity

Orbital eccentricity (0 = circular).

Starport

Starport

Class of the primary port facility (A–E, X for none).

Berthing Cost, Refined Fuel Cost, Unrefined Fuel Cost

Assigned automatically on import per the starport class berthing-cost table (WBH p. 257): 1D×Cr1000/Cr500/Cr100/Cr10 for Class A/B/C/D respectively, none for Class E or X. Refined fuel defaults to Cr500 where sold (Class A/B); unrefined fuel defaults to Cr100 where sold (Class A–D). Leave blank for none. Edit directly to override the assigned values.

Physical

Size

UWP size code. Changing size recalculates diameter, mass, and gravity.

Diameter

Surface diameter in kilometres. Editing diameter recalculates mass and gravity.

Density

Mean density relative to Earth (☉). Editing density recalculates mass and gravity.

Mass / Gravity

Calculated from diameter and density. Can be overridden manually.

Temperature

Mean surface temperature in Kelvin.

Axial Tilt

Axial tilt in degrees.

Albedo

Fraction of incident solar radiation reflected (0–1).

Greenhouse

Greenhouse effect factor.

Atmosphere

Atmosphere

Atmosphere type code (UWP digit).

Composition

Free-text description of atmospheric composition.

Irritant / Taint Severity / Taint Persistence

Atmospheric taint type, how dangerous it is, and how quickly it disperses.

Hazard

Insidious atmospheric hazard code (B Biological, R Radioactive, G Gas, T Thermal).

Hydrographics

Hydrographics

Percentage of surface covered by liquid (UWP code).

Liquid

Type of liquid present (e.g. water, hydrocarbons).

Distribution

Pattern of liquid distribution across the surface.

Population

Population

Population code 0–12.

Concentration Rating

How concentrated the population is (0 = extremely dispersed, 9 = extremely concentrated).

Urbanisation %

Percentage of the population living in urban settlements (0–100).

Major Cities

Number of significant urban centres.

Culture Traits

Eight dimensions describing the population's dominant culture. See WBH p. 181.

• Diversity: Monolithic (1) to Multicultural (20)
• Xenophilia: Xenophobic (1) to Xenophilic (17)
• Uniqueness: Normal (1) to Obscure (18)
• Symbology: Concrete (1) to Abstract (19)
• Cohesion: Individualistic (1) to Collective (22)
• Progressiveness: Reactionary (1) to Radical (18)
• Expansionism: Passive (1) to Expansionistic (18)
• Militancy: Peaceful (1) to Militant (20)

Native / Extinct Sophont

Whether a sophont species is or was native to this body.

Sophont

The species native to this body. Choose an existing sophont, or type a name to create a new one (the new sophont's home system is set to this system). Notes, language and picture are managed under Data Cores → Sophonts.

Habitability Rating

A score from 0 to 10 indicating suitability for unprotected human habitation. 0 is actively hostile; 10 is a Terra-equivalent garden world. See WBH p. 132.

Biomass Rating

Total biological mass on a comparative scale.

Biodiversity Rating

Number of distinct species or ecological niches.

Biocomplexity Rating

Highest level of biological complexity present (1–10).

Resource Rating

Economic value of extractable resources (2–12). See WBH p. 131.

Government

Government

Government type code (0–F hex). See WBH p. 156.

Judicial / Executive / Legislative

Structural composition of each branch: D Demos (elected assembly), S Single Council, M Multiple Councils, R Ruler. See WBH p. 158.

Authority

Which branch holds supreme authority: L Legislative, E Executive, J Judicial, B Balance (no dominant branch). See WBH p. 159.

Centralisation

Degree of central control: C Confederal (constituent units hold power), F Federal (power shared between centre and units), U Unitary (centre holds power). See WBH p. 159.

Law Level

Law Level

Overall degree of legal restriction (0–F hex). Changing this value automatically resets all five sub-classification selects to match, providing a baseline that can then be adjusted individually.

Weapons & Armour

Law level governing possession and carry of weapons and personal armour.

Criminal Law

Law level for criminal offences and prosecution thresholds.

Economic Law

Law level regulating commerce, licensing, and trade.

Private Law

Law level governing civil disputes and private contracts.

Personal Rights

Law level covering individual freedoms such as identification requirements and movement.

Uniformity

How consistently laws are applied: P Personal (varies by individual), T Territorial (varies by region), U Universal (applied equally to all).

Judicial System

Court structure: I Inquisitorial (state-led investigation), A Adversarial (opposing counsel), T Traditional (customary or religious law).

Death Penalty

Whether capital punishment is in use.

Presumed Innocence

Whether defendants are presumed innocent until proven guilty.

Econometric Infractions Administrative

Whether economic violations are handled administratively rather than criminally.

Tech Level

Tech Level

Technological sophistication of the dominant culture (0–35). Sets the overall tech level recorded in the UWP.

Electronics

Tech level for electronics and computing. May differ from the overall level where a society has specialised in this field (WBH p. 173).

Energy

Tech level for energy production and distribution (WBH p. 173).

Land

Tech level for land transport (WBH p. 173).

Sea

Tech level for sea transport (WBH p. 173).

Air

Tech level for air transport (WBH p. 173).

Space

Tech level for space transport and operations (WBH p. 173).

Personal Military

Tech level for personal-scale military equipment (WBH p. 173).

Heavy Military

Tech level for heavy military equipment and vehicles (WBH p. 173).

Manufacturing

Tech level for industrial manufacturing (WBH p. 173).

Medical

Tech level for medical technology (WBH p. 173).

Records

Survey Records

Free-text notes visible to players and the referee, written in Markdown (Markdown guide). Shown on the record in a collapsible block; toggle it with the chevron button. Reads “No findings reported” when empty.

Classified Records

Referee-only notes, also written in Markdown. Players never see this block, and it is left out of the API and exports for them.

Reference link

External documentation link (http or https). Leave blank to use the generated Traveller Wiki world entry for terrestrial planets, planetoids and planetoid belts in charted-space campaigns.