HD 20781
HD 20781 is a K0 V star 117 light years away with 4 known planets. They were all found in 2019. It has a companion star.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| HD 20781 b | 5.314 days | 0.0529 AU | at least 1.93 | 2019 | Radial Velocity | |
| HD 20781 c | 13.89 days | 0.1004 AU | at least 5.33 | 2019 | Radial Velocity | |
| HD 20781 d | 29.16 days | 0.1647 AU | at least 10.61 | 2019 | Radial Velocity | |
| HD 20781 e | 85.51 days | 0.3374 AU | at least 14.03 | 2019 | 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 K0 V
- 5,256 K surface temperature
- 0.7 times the mass of the Sun
- 0.8336 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.