Planet GJ 581 c

Name GJ 581 c
Planet Status Confirmed
Discovered in 2007
Mass
Mass*sin(i) 0.017783 ( -0.000752 +0.001214 ) MJ
Semi-Major Axis 0.074 (± 0.001) AU
Orbital Period 12.919 ( -0.002 +0.003 ) day
Eccentricity 0.087 ( -0.016 +0.15 )
ω 148.7 ( -33.0 +71.5 ) deg
Tperi
Radius
Inclination
Update 2022-04-25
Detection Method Radial Velocity
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

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
CH4 Modeling 2022 - LOUCA A.
H Modeling 2022 - LOUCA A.
OH Modeling 2022 - LOUCA A.

Observability Predictor

Other web-pages

Geneva Observatory data

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