Exoplanet CatalogExoplanet K2-121 b
Radius7.16 R⊕Earth = 1
Mass51.0 M⊕Earth = 1
Orbital period5.19 d
Equilibrium temp.716 K≈ 443 °C
Distance552.5 ly
Discovered2017Transit
Size compared (radius, Earth = 1)
1.00
3.88
7.16
11.21
Where it sits among all planets (percentile)
68%
67%
30%
46%
34%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of K2-121 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| K2-121 b | 5.19 | 7.16 | 51.0 | 716 | 2017 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| K2-121 | – | 4,526 | 0.68 | 0.71 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.