Mini-Neptune · HD 191939
HD 191939 c
ExoplanetsDiscovered 2020
Scientific overview
HD 191939 c is a mini-neptune orbiting HD 191939, completing an orbit every 29 days, about 175 light-years from Earth. It was discovered in 2020 using the transit method.
Host star
Planetary system — HD 191939 system
View the HD 191939 system (6 known planets).
| Planet | Class | Radius (R⊕) | Period (d) | Distance (ly) |
|---|---|---|---|---|
| HD 191939 bTransit · 2020 | Mini-Neptune | 3.41 | 8.8803 | 175 |
| HD 191939 cTransit · 2020 | Mini-Neptune | 3.2 | 28.5797 | 175 |
| HD 191939 dTransit · 2020 | Mini-Neptune | 3 | 38.353 | 175 |
| HD 191939 eRadial Velocity · 2022 | Gas giant | 13 | 101 | 175 |
| HD 191939 gRadial Velocity · 2022 | Mini-Neptune | 3.74 | 284 | 175 |
| HD 191939 fRadial Velocity · 2022 | Gas giant | 13.2 | 2898 | 175 |
Discovery and detection
Knowledge connections
- OrbitsHD 191939
- Member of systemHD 191939 system
- Discovered by methodTransit Method
- Discovered by missionTESS
- Catalogued inNASA Exoplanet Archive