Alpha Arietis
Listed as alf Ari in the NASA Exoplanet Archive.
Alpha Arietis is a K2III star 65.9 light years away with 1 known planet. It was found in 2010.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| alf Ari b | 380.8 days | 1.2 AU | at least 572.1 | 2010 | 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 K2III
- 4,553 K surface temperature
- 1.5 times the mass of the Sun
- 13.9 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.