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Tethys, also known as Saturn III, is a natural satellite of the outer planet, Saturn. It was discovered on March 21, 1684 by the astronomer G.D. Cassini.
Formation and Composition[]
Tethys is thought to have formed from an accretion disc or sub-nebula; a disc of gas and dust that existed around Saturn for some time after its formation. The low temperature at the position of Saturn in the Solar nebular means that water ice was the primary solid from which all moons formed. Other more volatile compounds like ammonia and carbon dioxide were likely present as well, though their abundances are not well constrained.
Surface Features[]
The surface of Tethys is heavily cratered, and the moon is spherical in shape.
Gallery[]
Orange tinted image of Tethys.
Spacipedia image of Tethys.
Cassini image of Tethys.
NASA model of Tethys.
Science on a Sphere image of Tethys.
| Moons of Saturn | |
|---|---|
| Ring Shepherds | S/2009 S 1 • Pan • Daphnis • Atlas • Prometheus • Pandora |
| Co-orbitals | Janus • Epimetheus |
| G Ring | Aegaeon |
| Alkyonides | Methone • Pallene • Anthe |
| Inner Large Moons | Mimas • Enceladus • Tethys • (Telesto • Calypso) • Dione • (Helene • Polydeuces) |
| Outer Large Moons | Rhea • Titan • Hyperion • Iapetus |
| Inuit | Kiviuq • Paaliaq • Siarnaq • Ijiraq • S/2005 S 4 • S/2019 S 1 • S/2020 S 1 • Tarqeq • S/2004 S 31 • S/2019 S 14 • S/2020 S 3 • S/2019 S 6 |
| Gallic | Albiorix • Bebhionn • S/2007 S 8 • S/2004 S 29 • Erriapus • Tarvos • S/2020 S 4 |
| Norse | Phoebe • S/2006 S 20 • S/2006 S 9 • Skathi • S/2007 S 5 • S/2007 S 7 • S/2007 S 2 • S/2004 S 37 • S/2004 S 47 • S/2004 S 40 • S/2019 S 2 • S/2019 S 3 • S/2020 S 7 • Skoll • S/2020 S 2 • S/2019 S 4 • S/2004 S 41 • S/2004 S 42 • Hyrrokkin • Greip • S/2004 S 13 • S/2007 S 6 • Mundilfari • S/2006 S 1 • S/2004 S 43 • S/2006 S 10 • S/2019 S 5 • Gridr • Bergelmir • Jarnsaxa • Narvi • Suttungr • S/2007 S 3 • S/2004 S 44 • S/2004 S 45 • Hati • S/2004 S 17 • S/2006 S 11 • S/2004 S 12 • Eggther • S/2006 S 13 • S/2007 S 9 • S/2019 S 7 • S/2019 S 8 • Farbauti • Thrymr • Bestla • S/2019 S 9 • S/2004 S 46 • Angrboda • S/2019 S 11 • Aegir • Beli • S/2019 S 10 • S/2019 S 12 • Gerd • S/2019 S 13 • S/2006 S 14 • Gunnlod • S/2019 S 15 • S/2020 S 6 • S/2004 S 7 • S/2006 S 3 • S/2005 S 5 • Skrymir • S/2006 S 16 • S/2006 S 15 • S/2004 S 28 • S/2020 S 8 • Alvaldi • Kari • S/2004 S 48 • Geirrod • Fenrir • S/2004 S 50 • S/2006 S 17 • S/2004 S 49 • S/2019 S 17 • Surtur • S/2006 S 18 • Loge • Ymir • S/2019 S 19 • S/2004 S 21 • S/2019 S 18 • S/2004 S 39 • S/2019 S 16 • S/2004 S 53 • S/2004 S 36 • Thiazzi • S/2019 S 20 • S/2006 S 19 • S/2004 S 26 • Fornjot • S/2004 S 51 • S/2020 S 10 • S/2020 S 9 • S/2004 S 34 • S/2019 S 21 • S/2004 S 52
|
| Outlier Prograde Satellites | S/2006 S 12 • S/2004 S 24 |
| Spurious Moons | Chiron • Themis • S/2004 S 6 • S/2004 S 4 • S/2004 S 3 • Peggy |