Exoplanet CatalogExoplanet Kepler-399 d
Radius1.89 R⊕Earth = 1
Mass4.2 M⊕Earth = 1
Orbital period58.03 d
Equilibrium temp.486 K≈ 213 °C
Distance2,415.3 ly
Discovered2014Transit
Size compared (radius, Earth = 1)
1.00
1.89
3.88
11.21
Where it sits among all planets (percentile)
26%
24%
80%
25%
71%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Kepler-399 (3)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Kepler-399 b | 14.43 | 0.96 | 0.8 | 773 | 2014 |
| Kepler-399 c | 26.68 | 1.43 | 2.6 | 630 | 2014 |
| Kepler-399 d | 58.03 | 1.89 | 4.2 | 486 | 2014 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Kepler-399 | – | 5,502 | 0.68 | 0.90 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.