Planet GJ 581 g
| Name | GJ 581 g | ||
| Planet Status | Unconfirmed | ||
| Discovered in | 2010 | ||
| Mass | 0.01 MJ |  |
|
| Mass*sin(i) | — | ||
| Semi-Major Axis | 0.14601 (± 0.00014) AU | |
|
| Orbital Period | 36.652 (± 0.052) day | |
|
| Eccentricity | — | ||
| ω | — | ||
| Tperi | — | ||
| Radius | — | ||
| Inclination | — | ||
| Update | 2016-02-23 | ||
| Detection Method | Other | ||
| Mass Detection Method | — | ||
| Radius Detection Method | — | ||
| Primary transit | — | ||
| Secondary transit | — | ||
| λ | — | ||
| Impact Parameter b | — | ||
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | — | ||
| Calculated temperature | — | ||
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | — |
Star
GJ 581| Name | GJ 581 | ||
| Distance | 6.21 (± 0.1) pc | |
|
| Spectral type | M2.5V | ||
| Apparent magnitude V | 10.55 | ||
| Mass | 0.31 (± 0.02) MSun | |
|
| Age | 8.0 ( -1.0 +1.0 ) Gyr | |
|
| Effective temperature | 3498.0 (± 56.0) K | |
|
| Radius | 0.3 (± 0.01) RSun | |
|
| Metallicity [Fe/H] | -0.135 | |
|
| Detected Disc | Imaging | |
|
| Magnetic Field | — | ||
| RA2000 | 15:19:26.0 | ||
| Dec2000 | -07:43:20 | ||
| Alternate Names | GJ 581 | ||
| Planetary system | 3 planets |
Observability Predictor 
Remarks
13 Sep 2011: Planet Gl 581 g not found by Forveille et al. 2011 either with keplerian fit or circular orbits for Gl 581 b,c,d,e02 Nov 2010: Anglada-Escude (2010) investigates the degeneracy deriving from the aliasing of eccentric harmonics of an already detected planet and finds that "though the statistical degeneracy is clearly present, the existence of GJ 581g remains well supported by the available data".
11 Oct 2010: The planet Gl581 g not present in new HARPS data Pepe et al. 2010 - IAU Symposium 276)
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