|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:apparentMagnitude
|
3.21
|
|
gptkbp:binarySeparation
|
20 AU
|
|
gptkbp:catalogueNumber
|
gptkb:BD+76_928
gptkb:HIP_116727
gptkb:HR_8974
gptkb:ADS_16402
gptkb:HD_222404
FK5 891
SAO 10908
WDS J23392+7737
|
|
gptkbp:contains
|
gptkb:Gamma_Cephei_A
gptkb:Gamma_Cephei_B
|
|
gptkbp:containsPlanet
|
gptkb:Gamma_Cephei_Ab
|
|
gptkbp:declination
|
+77° 37′ 56″
|
|
gptkbp:discoveredPlanet
|
1988
|
|
gptkbp:distanceFromEarth
|
45 light-years
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Gamma Cephei system
|
|
gptkbp:locatedIn
|
gptkb:constellation_Cepheus
|
|
gptkbp:notableFor
|
first exoplanet candidate discovered (later confirmed) in a binary system
|
|
gptkbp:otherName
|
gptkb:Errai
|
|
gptkbp:planetMass
|
1.85 Jupiter masses
|
|
gptkbp:planetOrbitalPeriod
|
2.5 years
|
|
gptkbp:planetSemiMajorAxis
|
2.05 AU
|
|
gptkbp:primaryStarMass
|
1.4 solar masses
|
|
gptkbp:properMotionRA
|
yes
|
|
gptkbp:rightAscension
|
23h 39m 20.8s
|
|
gptkbp:secondaryStarMass
|
0.4 solar masses
|
|
gptkbp:spectralType
|
K1IV (primary)
M4V (secondary)
|
|
gptkbp:bfsParent
|
gptkb:Gamma_Cephei_A
gptkb:Gamma_Cephei_Ab
gptkb:Gamma_Cephei_B
|
|
gptkbp:bfsLayer
|
7
|