Exoplanet CatalogExoplanet Kepler-9 c
Radius8.08 R⊕Earth = 1
Mass29.9 M⊕Earth = 1
Orbital period38.99 d
Equilibrium temp.523 K≈ 250 °C
Distance2,049.1 ly
Discovered2010Transit
Size compared (radius, Earth = 1)
1.00
3.88
8.08
11.21
Where it sits among all planets (percentile)
68%
64%
75%
28%
66%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Kepler-9 (3)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Kepler-9 d | 1.59 | 1.64 | 8.4 | 2,026 | 2010 |
| Kepler-9 b | 19.24 | 8.29 | 43.4 | 661 | 2010 |
| Kepler-9 c | 38.99 | 8.08 | 29.9 | 523 | 2010 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Kepler-9 | – | 5,774 | 0.96 | 1.02 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.