gamma Cephei

Display orbital revolution around the star gamma Cephei
Imaginary Picture of Star gamma Cephei
Star Name : gamma Cephei
Alternate Name : gam Cephei
Star Distance (LY/pc): 45.9958 (LY) 14.1024 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 4.9000 (Rsun, estimated)
Stellar Mass (Msun): 1.4000 (Msun/observed) 1.4000 (Msun/estimated)
Spectral type : K1III-IV
Metalicity : 0.1800
Absolute Magnitude : 2.47
Apparent Magnitude : 3.22
Right Ascension(RA) : 354.83688
Declination(DEC) : 77.63222
  • This is the gamma Cephei . The star gamma Cephei islocated about 46.0 light-years (14.1 pc) away from our Solar System.
  • The star gamma Cephei has apparent magnitude of 3.2, with absolute magnitude of 2.5.
  • It is 1.4 times more massive and 4.9 times bigger compared with our Sun. The surface temperature is 4800 with its spectral types of K1III-IV
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet gamma Cephei b radius 0.907830 mass 17.539000 orbital distance 2.145900
    (Illustration of the gamma Cephei's Planetary System)



    The Star gamma Cephei 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.446 AU ( 365878312.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.381 AU ( 505739443.2 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 5.151 AU ( 770634991.5 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 7.580 AU ( 1134023149.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star gamma Cephei)



    Kopparapu's Recent Venus for Star gamma Cephei distance : 2.670 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star gamma Cephei distance : 3.380 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star gamma Cephei distance : 3.265 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star gamma Cephei distance : 3.580 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star gamma Cephei distance : 6.177 AU
    Kopparapu's Outer Boundary for Early Mars for Star gamma Cephei distance : 6.516 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star gamma Cephei)



  • Original Kopparapu Recent Venus for Star gamma Cephei distance : 2.637 AU
  • Original Kopparapu Runaway Greenhouse for Star gamma Cephei distance : 3.486 AU
  • Original Kopparapu Moist Greenhouse for Star gamma Cephei distance : 3.490 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star gamma Cephei distance : 6.280 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star gamma Cephei distance : 6.531 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star gamma Cephei)



    (Position in Stellar Map of star gamma Cephei )



    (Zoomed position in Stellar Map of star gamma Cephei (zoom level 3))

    (Synthetic Spectrum of star K2-365*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102