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Loading contentHD 40307 d is an exoplanet orbiting HD 40307, completing an orbit every 20 days, about 42 light-years from Earth. It was discovered in 2009 using the radial velocity method.
View the HD 40307 system (5 known planets).
| Planet | Class | Radius (R⊕) | Period (d) | Distance (ly) |
|---|---|---|---|---|
| HD 40307 bRadial Velocity · 2009 | — | — | 4.3123 | 42 |
| HD 40307 cRadial Velocity · 2009 | — | — | 9.6184 | 42 |
| HD 40307 dRadial Velocity · 2009 | — | — | 20.432 | 42 |
| HD 40307 fRadial Velocity · 2013 | Super-Earth | 2.13 | 51.76 | 42 |
| HD 40307 gRadial Velocity · 2013 | Mini-Neptune | 2.56 | 198 | 42 |