Exoplanet CatalogExoplanet Kapteyn c
Radius2.54 R⊕Earth = 1
Mass7.0 M⊕Earth = 1
Orbital period121.54 d
Equilibrium temp.166 K≈ -108 °C
Distance12.8 ly
Discovered2014Radial Velocity
Size compared (radius, Earth = 1)
1.00
2.54
3.88
11.21
Where it sits among all planets (percentile)
42%
40%
84%
4%
0%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Kapteyn (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Kapteyn c | 121.54 | 2.54 | 7.0 | 166 | 2014 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Kapteyn | M2.0V | 3,550 | 0.29 | 0.28 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.