Astronomical specifications:
| Discovery | 1684 by Cassini |
| Orbital characteristics: | |
| Distance from Saturn | 294,619 km |
| Eccentricity | 0.02 |
| Orbital periode about Saturn | 1.887 days |
| Orbital speed | 11.35 km/s |
| Inclination to Saturn equator | 1.51 deg |
| Rings | No |
| Physical characteristics: | |
| Radius | 533 km |
| Surface area | 4,940,000 km² |
| Volume | 6.3 x 108 km³ |
| Mass | 1.024 x 1020 kg |
| Density | 0.96 g/cm³ |
| Equatorial gravity | 0.145 m/s² |
| Escape velocity | 0.393 km/s |
| Rotation period | 1.887 days |
| Axial tilt | 0 deg |
| Surface temperature | 64 K |
| Atmospheric composition | - |
Tethys by Voyager 2.