HD 191939
HD 191939 is a G9 V star 175 light years away with 6 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 191939 b | 8.88 days | 0.0804 AU | 3.41 | 10 | 2020 | Transit |
| HD 191939 c | 28.58 days | 0.1752 AU | 3.195 | 8 | 2020 | Transit |
| HD 191939 d | 38.35 days | 0.2132 AU | 2.995 | 2.8 | 2020 | Transit |
| HD 191939 e | 101.1 days | 0.407 AU | at least 112.2 | 2022 | Radial Velocity | |
| HD 191939 g | 284 days | 0.812 AU | at least 13.5 | 2022 | Radial Velocity | |
| HD 191939 f | 7.934 years | 3.71 AU | at least 915.3 | 2022 | 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 G9 V
- 5,348 K surface temperature
- 0.81 times the mass of the Sun
- 0.94 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.