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- Gamma_Cephei abstract "Gamma Cephei (γ Cep, γ Cephei), traditionally named Errai, Er Rai, and or Alrai, is a binary star system approximately 45 light-years away in the constellation of Cepheus. Gamma Cephei contains an apparent magnitude of 3.22. The visible part of the system is a stellar class K1III-IV orange subgiant star on its first ascent off the main sequence. It is about 6.6 billion years old (based on Fe/H metallicity). Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified.Gamma Cephei is the naked-eye star that will succeed Polaris as the Earth's northern pole star, due to the precession of the equinoxes. It will be closer to the northern celestial pole than Polaris around 3000 CE and will make its closest approach around 4000 CE. The "title" will pass to ι Cephei some time around 5200 CE.The star has a companion star with a mass approximately 0.409 times that of our Sun. Gamma Cephei B is of stellar mass and is assumed to be of similar age to its primary. It is probably a red dwarf of class M4, 6.2 degrees of magnitude fainter than the K-type primary star.".
- Gamma_Cephei thumbnail Cepheus_constellation_map.png?width=300.
- Gamma_Cephei wikiPageExternalLink gamcep.html.
- Gamma_Cephei wikiPageExternalLink errai.shtml.
- Gamma_Cephei wikiPageExternalLink 1009.html.
- Gamma_Cephei wikiPageExternalLink planettour.asp?StarCatId=normal&PlanetId=235.
- Gamma_Cephei wikiPageExternalLink startour.asp?StarCatId=normal&StarId=196.
- Gamma_Cephei wikiPageExternalLink startour.asp?StarCatId=normal&StarId=230.
- Gamma_Cephei wikiPageExternalLink errai2.htm.
- Gamma_Cephei wikiPageID "345687".
- Gamma_Cephei wikiPageRevisionID "595502202".
- Gamma_Cephei absmagV "2.51".
- Gamma_Cephei ageGyr "6.6".
- Gamma_Cephei appmagV "3.22".
- Gamma_Cephei axis "1.467".
- Gamma_Cephei axisUnitless "20.18".
- Gamma_Cephei bV "1.03".
- Gamma_Cephei class "K1IVe".
- Gamma_Cephei class "M4V".
- Gamma_Cephei component "Gamma Cephei A".
- Gamma_Cephei component "Gamma Cephei B".
- Gamma_Cephei constell Cepheus_(constellation).
- Gamma_Cephei eccentricity "0.115".
- Gamma_Cephei eccentricity "0.4112".
- Gamma_Cephei epe "Gamma+Cephei".
- Gamma_Cephei epoch "J2000.0".
- Gamma_Cephei exoplanet Gamma_Cephei_Ab.
- Gamma_Cephei hasPhotoCollection Gamma_Cephei.
- Gamma_Cephei inclination "119.3".
- Gamma_Cephei mass "0.409".
- Gamma_Cephei mass "1.4".
- Gamma_Cephei mass "≥1.60 ± 0.13".
- Gamma_Cephei name "B".
- Gamma_Cephei noHeading "y".
- Gamma_Cephei node "18.04".
- Gamma_Cephei nsted "Gamma+Cephei".
- Gamma_Cephei pError "0.41".
- Gamma_Cephei parallax "72.69".
- Gamma_Cephei periarg "161.01".
- Gamma_Cephei periastron "1991.605".
- Gamma_Cephei period "67.5".
- Gamma_Cephei period "902.9".
- Gamma_Cephei primary "A".
- Gamma_Cephei propMoDec "126.59".
- Gamma_Cephei propMoRa "-47.96".
- Gamma_Cephei radialV "8.8".
- Gamma_Cephei semimajor "2.044".
- Gamma_Cephei simbad "Gamma+Cephei".
- Gamma_Cephei title Pole_star.
- Gamma_Cephei uB "0.94".
- Gamma_Cephei variable "Suspected".
- Gamma_Cephei years "3000".
- Gamma_Cephei subject Category:Gamma_Cephei.
- Gamma_Cephei subject Category:K-type_subgiants.
- Gamma_Cephei subject Category:M-type_main-sequence_stars.
- Gamma_Cephei subject Category:Northern_pole_stars.
- Gamma_Cephei subject Category:Stars_with_proper_names.
- Gamma_Cephei type BayerObjects.
- Gamma_Cephei type CelestialBody109239740.
- Gamma_Cephei type FlamsteedObjects.
- Gamma_Cephei type HIPObjects.
- Gamma_Cephei type HRObjects.
- Gamma_Cephei type HenryDraperCatalogueObjects.
- Gamma_Cephei type M-typeMainSequenceStars.
- Gamma_Cephei type NaturalObject100019128.
- Gamma_Cephei type NorthernPoleStars.
- Gamma_Cephei type Object100002684.
- Gamma_Cephei type PhysicalEntity100001930.
- Gamma_Cephei type Star109444100.
- Gamma_Cephei type StarsWithProperNames.
- Gamma_Cephei type Whole100003553.
- Gamma_Cephei type CelestialBody.
- Gamma_Cephei type Star.
- Gamma_Cephei type PhysicalBody.
- Gamma_Cephei comment "Gamma Cephei (γ Cep, γ Cephei), traditionally named Errai, Er Rai, and or Alrai, is a binary star system approximately 45 light-years away in the constellation of Cepheus. Gamma Cephei contains an apparent magnitude of 3.22. The visible part of the system is a stellar class K1III-IV orange subgiant star on its first ascent off the main sequence. It is about 6.6 billion years old (based on Fe/H metallicity).".
- Gamma_Cephei label "Alrai".
- Gamma_Cephei label "Errai".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Gamma Cephei".
- Gamma_Cephei label "Гамма Цефея".
- Gamma_Cephei label "الراعي (نجم)".
- Gamma_Cephei label "少衛增八".
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs Errai.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs Alrai.
- Gamma_Cephei sameAs 세페우스자리_감마.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei sameAs m.01ypfj.
- Gamma_Cephei sameAs Q13265.
- Gamma_Cephei sameAs Q13265.
- Gamma_Cephei sameAs Gamma_Cephei.
- Gamma_Cephei wasDerivedFrom Gamma_Cephei?oldid=595502202.