HD 81817
HD 81817 is a K3 III star 878 light years away with 2 known planets. The first was found in 2020 and the latest in 2022.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| HD 81817 c | 623 days | 2.325 AU | at least 7,186 | 2022 | Radial Velocity | |
| HD 81817 b | 2.796 years | 3.233 AU | 7,669 | 2020 | 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 K3 III
- 4,140 K surface temperature
- 4.3 times the mass of the Sun
- 83.8 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.