Planet GJ 317 b

Name GJ 317 b
Discovered in 2007
Mass 2.56 ( -0.411 +0.683 ) MJ
Mass*sin(i) 1.81 (± 0.05) MJ
Semi-Major Axis 1.148 AU
Orbital Period 692.0 (± 2.0) JD
Eccentricity 0.11 (± 0.05)
ω 340.0 (± 10.0) deg
Tperi 2451656.7 (± 35.0) JD
Radius
Inclination 45.0 ( -10.0 +10.0 ) deg
Update 2015-08-01
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Molecules
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 73.5 (± 2.0) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

GJ 317
Name GJ 317
Distance 15.1 (± 0.22) pc
Spectral type M3.5
Apparent magnitude V 12.0
Mass 0.42 (± 0.05) MSun
Age
Effective temperature 3510.0 (± 50.0) K
Radius
Metallicity [Fe/H] 0.36 (± 0.2)
Detected Disc
Magnetic Field
RA2000 08:40:59.0
Dec2000 -23:27:23
Alternate Names
Planetary system 2 planets

More data

Observability Predictor

Remarks

14 Nov 2011: With M.sini = 1.8 MJup and i = 45 deg. M = 2.5 0.70.4 M Jup (Anglada-Escudé et al. 2011).
06 Jul. 07: A possible second, yet unconfirmed, planet may be present: GJ 317 c (Johnson et al. 2007). The orbital period of GJ 317 b would then be 673.4 days and the eccentricity 0.25

Related publications

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