Exoplanet CatalogExoplanet Kepler-1221 b
Radius1.88 R⊕Earth = 1
Mass4.2 M⊕Earth = 1
Orbital period12.00 d
Equilibrium temp.632 K≈ 359 °C
Distance2,979.9 ly
Discovered2016Transit
Size compared (radius, Earth = 1)
1.00
1.88
3.88
11.21
Where it sits among all planets (percentile)
25%
24%
53%
38%
80%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Kepler-1221 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Kepler-1221 b | 12.00 | 1.88 | 4.2 | 632 | 2016 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Kepler-1221 | – | 5,194 | 0.82 | 0.87 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.