Saturnun

Saturnun is a fictional natural satellite of the planet Saturn. It appears in speculative astronomy and science fiction as part of discussions about the outer Saturnian system. There is no observational or mission-based evidence for its existence.

Physical characteristics commonly attributed to Saturnun in fiction include a small, icy body with an irregular shape, typically 60–120 kilometers across. The surface is imagined as heavily cratered, with bright ice exposures and a low-albedo regolith. A tenuous, if hypothetical, exosphere might be mentioned in some depictions, though no atmosphere would be expected at its size and distance.

Orbiting Saturn at a great distance in an inclined and eccentric orbit, Saturnun's orbital period is described in years, placing it among the outer, irregular satellites that inhabit the edge of Saturn's gravitational sphere.

Discovery and naming: As a fictional object, Saturnun has no real-world discovery date. The name follows common conventions for Saturnian moons, combining the planet's name with a short, simple suffix.

Context and significance: In fiction, Saturnun is used to illustrate dynamics of outer moon systems, such as gravitational interactions with rings and other moons, capture scenarios, or resonance effects. It also serves as a narrative device for exploration and the study of icy, distant satellites.