Exoplanet CatalogExoplanet HD 20781 b
Radius1.21 R⊕Earth = 1
Mass1.9 M⊕Earth = 1
Orbital period5.31 d
Equilibrium temp.1,006 K≈ 733 °C
Distance117.3 ly
Discovered2019Radial Velocity
Size compared (radius, Earth = 1)
1.00
1.21
3.88
11.21
Where it sits among all planets (percentile)
8%
8%
31%
70%
10%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of HD 20781 (4)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| HD 20781 b | 5.31 | 1.21 | 1.9 | 1,006 | 2019 |
| HD 20781 c | 13.89 | 2.17 | 5.3 | 730 | 2019 |
| HD 20781 d | 29.16 | 3.25 | 10.6 | 570 | 2019 |
| HD 20781 e | 85.51 | 3.83 | 14.0 | 398 | 2019 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| HD 20781 | K0 V | 5,256 | 0.83 | 0.70 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.