Exoplanet CatalogThe BD+20 2457 system (2 planets)
Distance5,021.9 ly
Planets2
Spectral typeK2 II
Star Teff4,137 K
Orbital period (days)
379.63
621.99
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| BD+20 2457 b | 379.63 | 12.10 | 6,807.6 | 1,160 | 2009 |
| BD+20 2457 c | 621.99 | 12.40 | 3,963.2 | 985 | 2009 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.