Exoplanet CatalogExoplanet HD 40307 b
Radius–Earth = 1
Mass1,189.0 M⊕Earth = 1
Orbital period4.31 d
Equilibrium temp.910 K≈ 637 °C
Distance42.2 ly
Discovered2009Radial Velocity
Where it sits among all planets (percentile)
91%
25%
63%
3%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of HD 40307 (5)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| HD 40307 b | 4.31 | – | 1,189.0 | 910 | 2009 |
| HD 40307 c | 9.62 | – | 1,868.5 | 696 | 2009 |
| HD 40307 d | 20.43 | – | 1,775.4 | 541 | 2009 |
| HD 40307 f | 51.76 | 2.13 | 5.2 | 398 | 2013 |
| HD 40307 g | 197.80 | 2.56 | 7.1 | 255 | 2013 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| HD 40307 | K2.5 V | 4,956 | 0.72 | 0.77 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.