Header

UWP

Universal World Profile — a seven-digit hex code encoding starport, size, atmosphere, hydrographics, population, government, and law level.

Starport

Class of the body's primary port facility, from A (excellent) through E (frontier) and X (none).

Allegiance

Political or cultural allegiance code, if assigned.

Orbital Data

Orbit / AU

Orbital radius. Shown as orbit number and/or astronomical units depending on campaign display settings. Moon orbits are expressed in planetary diameters.

Period

Time to complete one orbit around the parent body.

Effective HZCO Deviation

Deviation from the habitable zone centre orbit, accounting for stellar luminosity and greenhouse effect.

Retrograde

Whether the body orbits in the direction opposite to the primary star's rotation.

Inclination

Orbital plane inclination in degrees relative to the stellar equator.

Eccentricity

Orbital eccentricity (0 = circular; higher values indicate more elliptical orbits).

Tidally Locked

The body to which this object is gravitationally locked, if applicable.

Sidereal Day

Rotation period relative to the stars, in hours.

Twilight Zone

Indicates the body orbits within the star's twilight zone, producing extreme day/night temperature differentials.

Physical Data

Diameter

Surface diameter in kilometres, with UWP size code.

Mass

Planetary mass expressed in Earth masses (☉).

Gravity

Surface gravity in standard g.

Density

Mean density expressed relative to Earth (☉).

Environmental Data

Temperature

Mean surface temperature in °C.

Rotation

Sidereal rotation period in hours.

Axial Tilt

Axial tilt in degrees; drives seasonal variation.

Albedo

Fraction of incident solar radiation reflected by the surface and atmosphere (0–1).

Greenhouse

Greenhouse effect factor; contributes to surface temperature above the baseline solar input.

Atmosphere

Atmosphere code with composition type. Tainted atmospheres include irritant, severity, and persistence sub-classifications.

Hydrographics

Percentage of surface covered by liquid, with liquid type and distribution pattern.

Biological Data

Habitability Rating

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

Biomass Rating

Total biological mass present on the world, on an arbitrary comparative scale.

Biodiversity Rating

Number of distinct species or ecological niches. Values of 10 or above are equivalent to pre-human Terra.

Biocomplexity Rating

Highest level of biological complexity present, from primitive single-cell organisms (1) through extant or extinct sophonts (9) to ecosystem-wide superorganisms (10).

Resource Rating

Economic value of extractable resources. Ranges from 2 (none extractable) through 12 (liable to trigger a resource rush).

Social Data

Population

Population code (0–12) with approximate headcount range, concentration rating, urbanisation percentage, and major city count.

Native / Extinct Sophont

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

Government

Government type code and description.

Law Level

Law level code indicating degree of legal restriction, keyed to weapon restrictions.

Tech Level

Technological sophistication of the dominant culture (0–35).