Tau Ceti
Listed as tau Cet in the NASA Exoplanet Archive.
Tau Ceti is a G8.5V star 11.8 light years away with 3 known planets. They were all found in 2017.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| tau Cet g (disputed) | 20 days | 0.133 AU | at least 1.75 | 2017 | Radial Velocity | |
| tau Cet h (disputed) | 49.41 days | 0.243 AU | at least 1.83 | 2017 | Radial Velocity | |
| tau Cet f (disputed) | 636.1 days | 1.334 AU | at least 3.93 | 2017 | Radial Velocity |
"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.
Star
- Spectral type G8.5V
- 5,310 K surface temperature
- 0.783 times the mass of the Sun
- 0.83 times the radius of the Sun
Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.