Planet GJ 581 b

Name GJ 581 b
Planet Status Confirmed
Discovered in 2005
Mass
Mass*sin(i) 0.04782 ( -0.00085 +0.00069 ) MJ
Semi-Major Axis 0.041 (± 0.001) AU
Orbital Period 5.368 (± 0.001) day
Eccentricity 0.022 ( -0.005 +0.027 )
ω 118.3 ( -22.9 +27.4 ) deg
Tperi
Radius
Inclination
Update 2019-06-13
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
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


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