Gamma Cephei

Also known as Alrai, Errai, 35 Cephei, 35 Cep, γ Cep, γ Cephei, GJ 903, GCRV 14826

star in the constellation of Cephei

Key facts

Constellation: Cepheus
Right ascension: 23 39 20.910
Declination: +77 ° 37 ′ 56.51 ″
Evolutionary stage: Red-giant branch
Spectral type: K1III-IV CN1
U b color index: +0.94
B v color index: +1.03
Variable type: Suspected

via Wikipedia infobox

Wikidata facts

Distance from Earth: 13.79
Diameter: 6860000
Radius: 4.9
Mass

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Article

Gamma Cephei is a binary star system in the northern constellation of Cepheus. Its name is a Bayer designation that is Latinized from γ Cephei, and abbreviated Gamma Cep or γ Cep. This system is visible to the naked eye as a point of light with a combined apparent visual magnitude of 3.21. Based on parallax measurements, it is located at a distance of approximately 45 light-years from Earth.

The primary, Gamma Cephei A, is officially named Errai, pronounced /ɛˈreɪ.iː/, the traditional name of the system. It is a stellar class K1 orange giant or subgiant star. The companion, Gamma Cephei B, is a low mass red dwarf star. A conformed exoplanet is orbiting the primary; it is designated Gamma Cephei Ab, later named Tadmor.