Planet gamma Cephei b

Name gamma Cephei b
Discovered in 2003
M × sin i 1.85 (± 0.06) MJ
Semi-major axis 2.05 (± 0.06) AU
Orbital period 903.3 (± 1.5) day
Eccentricity 0.049 (± 0.034)
ω 94.6 (± 34.6) deg
Tperi 53147.0 (± 71.0) JD
Radius
Inclination 5.7 ( -1.9 +1.9 ) deg;
Update Jan. 14, 2011
Detection method detected by radial velocity
Molecules detected
Primary transit
Secondary transit
Anomaly angle
Time Vr=0
Calculated temperature
Measured temperature
Hottest point longitute
Surface gravity log(g/gH)

Remarks

11 Jan 2011: Reffert et al. 2011 give a mass range derived from astrometry 5.0 - 26.9 MJup at the 3 σ level .
The errors on inclination are at the 3 σ level (Reffert et al. 2011) 27 September 02: The star is part of a binary system with period 70 yrs ± 16 yrs, with an eccentricity of 0.439 ± 0.06 (Cochran et al 2002).

Other web-pages

Star

Name gamma Cephei
Distance 13.79 pc
Spectral type K1III-IV
Apparent magnitude V 3.22
Mass 1.4 (± 0.12) MSun
Age 6.6 Gyr
Effective temperature 4800.0 (± 100.0) K
Radius 4.9 RSun
Metallicity [Fe/H] 0.18
RA2000 23:39:20.0
Dec2000 +77:37:56
Planetary system 1 planet

Remarks

15 Nov. 06: Binary star companion at 1.467 arc sec; orbital period 67.5 ± 1.4 yr and an orbit inclination 119 ± deg.(Neuhäuser et al 200T)

More data


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