Exoplanet CatalogExoplanet alf Ari b
Radius13.40 R⊕Earth = 1
Mass572.1 M⊕Earth = 1
Orbital period380.80 d
Equilibrium temp.747 K≈ 474 °C
Distance65.9 ly
Discovered2010Radial Velocity
Size compared (radius, Earth = 1)
1.00
3.88
11.21
13.40
Where it sits among all planets (percentile)
87%
85%
89%
49%
5%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of alf Ari (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| alf Ari b | 380.80 | 13.40 | 572.1 | 747 | 2010 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| alf Ari | K2III | 4,553 | 13.90 | 1.50 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.