Exoplanet CatalogExoplanet K2-257 b
Radius0.83 R⊕Earth = 1
Mass0.5 M⊕Earth = 1
Orbital period1.61 d
Equilibrium temp.789 K≈ 516 °C
Distance208.8 ly
Discovered2018Transit
Size compared (radius, Earth = 1)
0.83
1.00
3.88
11.21
Where it sits among all planets (percentile)
2%
1%
5%
53%
19%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of K2-257 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| K2-257 b | 1.61 | 0.83 | 0.5 | 789 | 2018 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| K2-257 | – | 3,725 | 0.50 | 0.52 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.