Exoplanet CatalogExoplanet Kepler-21 b
Radius1.64 R⊕Earth = 1
Mass7.5 M⊕Earth = 1
Orbital period2.79 d
Equilibrium temp.2,015 K≈ 1,742 °C
Distance354.0 ly
Discovered2012Transit
Size compared (radius, Earth = 1)
1.00
1.64
3.88
11.21
Where it sits among all planets (percentile)
20%
43%
12%
98%
26%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of Kepler-21 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| Kepler-21 b | 2.79 | 1.64 | 7.5 | 2,015 | 2012 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| Kepler-21 | F6 IV | 6,305 | 1.90 | 1.41 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.