Hyperion: evidence and sources

Hyperion

Saturn's porous, sponge-like moon. Titan maintains its eccentric orbit, while Hyperion tumbles chaotically instead of keeping one face toward Saturn.

Kepler elements Orbit basis, the same label the app shows on the selection card.

Every aspect, with its origin

One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.

ObservedCatalogComputedReconstructedIllustrativeUndocumented

Orbit Computed

Orbit from mean elements

Hyperion is placed by solving a Keplerian orbit around saturn at the simulation time (a = 1,481,500 km, e = 0.105, i = 0.6°, period 21.3 d).

SourceBundled orbital elements

MethodTwo-body propagation of the stored elements by the shared orbit service; no perturbations.

LimitA two-body orbit ignores perturbations, and the object catalog does not record which element table these values were copied from.

Physical data Undocumented

Bulk properties

Hyperion: mean radius 135 km. These values are bundled with the object record and drive the rendered size.

SourceBundled object record

LimitThe object catalog does not record where these values came from; treat them as unverified until the record is completed.

Appearance Illustrative

Approximate shape and color

This globe or ellipsoid shows approximate shape and color. No spacecraft surface mosaic is applied; fine geological detail is not represented. Rotation is modeled.

SourceAppearance source and method

MethodThis describes the displayed appearance only; it does not certify catalog dimensions, orbital elements or unobserved geology.

Description Undocumented

Description and facts

The short description and the fact list are written by the Space Time authors for orientation. They are not quoted from a catalog field and carry no citation of their own.

SourceSpace Time editorial text

Not yet documented

Physical data: The object catalog does not record where these values came from; treat them as unverified until the record is completed.
Description: The short description and the fact list are written by the Space Time authors for orientation. They are not quoted from a catalog field and carry no citation of their own.

Dataset freshness

Snapshots this page depends on, read from the generated manifests at request time.
Dataset	Last refreshed	Horizon	Automated
Planetary satellite mean elements JPL Solar System Dynamics	no snapshot date	Mean elements (a, e, i, period) for every known natural satellite	No, refreshed by hand npm run generate:moons