Planet gamma Cephei b
| Name | gamma Cephei b | |
| Discovered in | 2003 | |
| Mass | 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 | 9.6 (± 5.9) deg; | |
| Update | July 10, 2014 | |
| Detection Method | Radial Velocity | |
| Mass Detection Method | — | |
| Radius Detection method | — | |
| Molecules detected | — | |
| Primary transit | — | |
| Secondary transit | — | |
| Anomaly angle | — | |
| impact Parameter b | — | |
| Time Vr=0 | — | |
| Velocity Semiamplitude K | — | |
| Calculated temperature | — | |
| Measured temperature | — | |
| Hottest point longitute | — | |
| Geometric albedo | — | |
| Surface gravity log(g/gH) | — | |
| Alternate Names | — |
Observability Predictor 
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 | |
| Detected Disc | — | |
| Magnetic Field | — | |
| RA2000 | 23:39:20.0 | |
| Dec2000 | +77:37:56 | |
| Alternate Names | — | |
| 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
- Simbad
- Most recent references (ADS)
Related publications
On the Likelihood of Planet Formation in Close Binaries
2015
JANG-CONDELL H.
ApJ, 799, 147
paper arxiv
News From The Gamma Cephei Planetary System
2011
ENDL M., COCHRAN W., HATZES A. & WITTENMYER R.
arxiv
Mass constraints on substellar companions candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs
2011
REFFERT S. & QUIRRENBACH A.
Astron. & Astrophys., 527, A140
paper arxiv
A Planetary Companion to Gamma
Cephei A.
2003
HATZES A., COCHRAN W., ENDL M., McARTHUR B., PAULSON D., WALKER G.,
CAMPBELL B. & YANG S.
ApJ., 599, 1383
paper
Direct detection of exoplanet host star companion $\gamma$ Cep B and revised masses for both stars and the sub-stellar object
2007
NEUHÄUSER R., MUGRAUER M., FUKAGAWA M., TORRES G. & SCHMIDT T.
Astron. & Astrophys., 462, 777
paper preprint
The planet host star gamma Cephei: physical prperties, the binary orbit and the mass of the substellar companion
2006
TORRES G.
ApJ.
preprint