» Extrasolar Planet Guide » Companions of Normal Stars » gamma Cephei A

Orange Sub Giant


Constellation: Cepheus
Right Ascension: 23 39 20.8490
Declination: +77 37 56.193
Distance from Sol: 38.48 Light Years
Alternate Designations: g Cep
Errai
HD 222404
Spectral Type: K1 IV
Apparent Magnitude: 3.225
Mass: 1.59 Solar Masses
Radius: 4.7 Solar Radii
Effective Temperature: 4900 Kelvin
Metallicity: -0.05 to 0.27 [Fe/H]
~0.89 times Solar
Age: 3000 Million Years
Inner Edge of Habitability Zone: 1.69 AU
Outer Edge of Habitability Zone: 5.27 AU
Estimated Stellar Lifespan 2487 million years

g Cep is a double star system consisting of a K1 IV primary and a M1secondary. Data on the secondary is:

Spectral Type:M1 V?
Mass:0.4 Solar Masses
Radius:0.5 Solar Radii
Surface Temperature:3500 K
Orbital Period about Primary:74 years
Distance from Primary:12-32 AU
Orbital Eccentricity:0.44
Angle of Periastron:162.1 degrees


View a VRML model of the gamma Cephei A system. Please be patient while the file downloads.

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Skymap created with John Walker's online Your Sky Virtual Telescope

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