Barnborstar

Barnborstar is a fictional star in the Barnbor system, widely used in speculative fiction and tabletop role-playing settings as a reference point for exoplanet habitability and space navigation.

Overview and characteristics

In canonical in-universe descriptions, Barnborstar is a mid-sized orange star comparable to a K-type main-sequence star. It is typically assigned a mass near 0.8 solar masses, a radius close to 0.9 solar radii, and a surface temperature around 5,000 kelvin, yielding a luminosity about half that of the Sun. The star is portrayed with moderate magnetic activity and a rotation period measured in tens of days, depending on the model.

Planetary system

The Barnbor system is depicted as compact, hosting at least three planets. Barnbor-1 is described as a rocky world near the inner edge of the habitable zone; Barnbor-2 is a super-Earth with potential hydrographic cycles; Barnbor-3 is a gas giant surrounded by a family of small moons. Orbital resonances and tidal effects are common elements in discussions of the system, with outer planets providing long-term dynamical stability in most narratives.

Discovery, naming, and catalogs

In-universe lore attributes the naming to early spectroscopic surveys conducted by astronomers in the Nova Catalog era. The star and its planets appear in fictional archives and stellar repositories, where observers log spectral features, planetary atmospheres, and climate models used for world-building and storytelling.

Cultural context and use

Barnborstar serves as a stable, modest-energy anchor for colonization narratives and climate modeling in fiction. It is frequently employed to illustrate topics such as planetary migration, resonance chains, and climate cycles, making it a common touchstone in world-building and game materials.