Gamma Cephei
Listed as gam Cep in the NASA Exoplanet Archive.
Gamma Cephei is a K1 III-IV star 46.0 light years away with 1 known planet. It was found in 2003. It has a companion star.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| gam Cep b | 2.475 years | 1.978 AU | at least 514.9 | 2003 | 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 K1 III-IV
- 4,775 K surface temperature
- 1.26 times the mass of the Sun
- 4.74 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.