Exoplanet CatalogThe GJ 581 planetary system
Distance (light-years)20.5
Spectral typeM3.0 V
Temperature (K)3,500
Mass (Sun = 1)0.30
| Planet | Method | Year | Orbital period (days) | Radius (Earth = 1) | Mass (Earth = 1) | Equilibrium temperature (K) |
|---|---|---|---|---|---|---|
| GJ 581 e | Radial Velocity | 2009 | 3.15 | 1.38 | 2.5 | 554 |
| GJ 581 b | Radial Velocity | 2005 | 5.37 | 4.79 | 20.5 | 464 |
| GJ 581 c | Radial Velocity | 2007 | 12.92 | 2.50 | 6.8 | 346 |
Values are the archive’s composite parameters and may combine several publications; mass may be a minimum mass (M·sin i). “–” means no value in the archive.
The star
| Spectral type | Temperature (K) | Radius (Sun = 1) | Mass (Sun = 1) |
|---|---|---|---|
| M3.0 V | 3,500 | 0.30 | 0.30 |
About this page
GJ 581 is about 20.5 light-years from the Sun and has 3 confirmed planet(s).