Panerus

Panerus is a fictional terrestrial exoplanet widely used in science fiction and pedagogical models to illustrate planetary geology, climatology, and astrobiology. In canonical world-building canons, Panerus orbits a K-type main-sequence star about 110 light-years from Earth and is categorized as a terrestrial super-Earth with a radius 1.4 times that of Earth and a mass near 5 Earth masses. Its orbital period is approximately 38 days, yielding temperate conditions when greenhouse effects maintain surface warmth.

The planet features a GIS-defined surface with two major continents and extensive oceans, with land cover about 40 percent and ocean coverage around 50 percent. Panerus has a nitrogen–carbon dioxide–water atmospheric system with surface pressure around 1 bar, and an average global temperature near 288 K (15 C). The climate shows moderate winds and seasonal variation due to axial tilt.

The Paneran biosphere is described as having photosynthetic organisms that absorb in the near-infrared, adapted to the star's spectral output. Multicellular animal life is variably depicted across sources, ranging from simple invertebrate-like fauna to more complex ecosystems in later narratives.

In literature and education, Panerus is used to illustrate planetary habitability, the consequences of alternative biospheres, and resource-exploitation debates. Some texts describe robotic reconnaissance missions and initial attempts at in situ resource utilization, though no permanent settlements are depicted within canonical material.

The name Panerus is an invented designation in the Paneran lexicon, combining elements intended to evoke global breadth.