UPSA Object Registry
Registry · solar system

Hyperion

Natural satellite JPL Horizons
Mean radius
133 km
Density
0.569 g/cm^3
Orbital period
21.28 d
Geometric albedo
0.25

Also known as

2 identifiers

Horizons 607SVII

Recorded parameters

7 quantities with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Mean radius 133 km Mean Radius (km) JPL Horizons JPL Horizons on-line ephemeris system
Density 0.569 g/cm^3 Density (g/cm^3) JPL Horizons JPL Horizons on-line ephemeris system
Orbital period 21.28 d Orbital period JPL Horizons JPL Horizons on-line ephemeris system
Geometric albedo 0.25 Geometric Albedo JPL Horizons JPL Horizons on-line ephemeris system
Eccentricity e 0.0232 e Eccentricity, e JPL Horizons JPL Horizons on-line ephemeris system
Inclination i deg 0.615 deg Inclination, i (deg) JPL Horizons JPL Horizons on-line ephemeris system
Rotational period Chaotic Rotational period JPL Horizons JPL Horizons on-line ephemeris system

Provenance

where this card came from
ArchiveRead at (UTC)Record
JPL Horizons 2026-08-14 17:09 open at source

Machine-readable: /api/v1/object/hyperion · Registry entry updated 2026-08-14.