Exoplanet CatalogExoplanet GJ 581 c
Radius2.50 R⊕Earth = 1
Mass6.8 M⊕Earth = 1
Orbital period12.92 d
Equilibrium temp.346 K≈ 73 °C
Distance20.5 ly
Discovered2007Radial Velocity
Size compared (radius, Earth = 1)
1.00
2.50
3.88
11.21
Where it sits among all planets (percentile)
41%
40%
55%
13%
1%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of GJ 581 (3)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| GJ 581 e | 3.15 | 1.38 | 2.5 | 554 | 2009 |
| GJ 581 b | 5.37 | 4.79 | 20.5 | 464 | 2005 |
| GJ 581 c | 12.92 | 2.50 | 6.8 | 346 | 2007 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| GJ 581 | M3.0 V | 3,500 | 0.30 | 0.30 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.