UPSA Object Registry
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Tethys

Natural satellite JPL Horizons
Mean radius
536.3 km
Mass
61.76 1e19 kg
Density
0.956 g/cm^3
Orbital period
1.888 d
Geometric albedo
0.8

Also known as

2 identifiers

Horizons 603SIII

Recorded parameters

10 quantities with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Mass 61.76 1e19 kg Mass (10^19 kg) JPL Horizons JPL Horizons on-line ephemeris system
Mean radius 536.3 km Mean Radius (km) JPL Horizons JPL Horizons on-line ephemeris system
Density 0.956 g/cm^3 Density (g/cm^3) JPL Horizons JPL Horizons on-line ephemeris system
Orbital period 1.888 d Orbital period JPL Horizons JPL Horizons on-line ephemeris system
Geometric albedo 0.8 Geometric Albedo JPL Horizons JPL Horizons on-line ephemeris system
GM 41.21 km^3/s^2 GM (km^3/s^2) JPL Horizons JPL Horizons on-line ephemeris system
Eccentricity e 0.0001 e Eccentricity, e JPL Horizons JPL Horizons on-line ephemeris system
Inclination i deg 1.091 deg Inclination, i (deg) JPL Horizons JPL Horizons on-line ephemeris system
Rotational period Synchronous Rotational period JPL Horizons JPL Horizons on-line ephemeris system
Semi major axis a km 294.67 km Semi-major axis, a (km) 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/tethys · Registry entry updated 2026-08-14.