Tethys
Tethys is a mid-sized icy moon of Saturn, notable for its large impact basin and surface fractures.
Also known as: Saturn III, Tethys moon
How big is it?
1,062 km across
Mean diameter · approximate
Typical recorded range: 1,060 km to 1,065 km.
A little perspective
About the same scale as Charon.
Charon: Charon is a natural satellite of Pluto, composed mainly of rock and water ice.
Measurements, assumptions & sources +
Tethys
Saturn moon Tethys has a mean diameter of about 1,062.2 km and mass of about 6.1745 × 10²⁰ kg. The identity-specific illustration includes the Odysseus basin and restrained Ithaca Chasma detail.
NASA JPL — Planetary satellite physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Charon
Rounded mean-radius model of Charon. The derived area and volume describe a sphere; surface terrain and flattening are omitted.
NASA JPL — Planetary satellite physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 1,062 km
For comparison, this page uses mean diameter. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary. The recorded range is 1,060 km to 1,065 km.
Saturn moon Tethys has a mean diameter of about 1,062.2 km and mass of about 6.1745 × 10²⁰ kg. The identity-specific illustration includes the Odysseus basin and restrained Ithaca Chasma detail.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Tethys dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 1,062 km | 1,060 km to 1,065 km | approximate | |
| 6.174 × 10¹⁷ t | 6.16 × 10¹⁷ t to 6.19 × 10¹⁷ t | approximate |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · SpaceCeres939.4 kmCeres is a dwarf planet located in the asteroid belt between Mars and Jupiter.
Around the same scale · SpaceCharon1,212 kmCharon is a natural satellite of Pluto, composed mainly of rock and water ice.
Nearest higher value · SpaceDione1,123 kmDione is an icy moon of Saturn, distinguished by its heavily cratered surface and bright ice cliffs.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NASA JPL — Planetary satellite physical parametersPublished mean radii and gravitational parameters GM. Spherical areas, volumes, masses and local gravity are explicitly derived.
There’s always another scale
Follow your curiosity.
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