Statements (25)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:star
astronomer |
gptkbp:apparentMagnitude |
2.45
|
gptkbp:BayerDesignation |
α Cephei
|
gptkbp:constellation |
gptkb:Cepheus
|
gptkbp:declination |
+62° 35′ 08″
|
gptkbp:diameter |
2.3 solar radii
|
gptkbp:distanceFromEarth |
49 light years
|
gptkbp:epoch |
gptkb:J2000
|
https://www.w3.org/2000/01/rdf-schema#label |
Alpha Cephei
|
gptkbp:locatedIn |
gptkb:constellation_Cepheus
|
gptkbp:luminosity |
18 times solar luminosity
|
gptkbp:mass |
1.74 solar masses
|
gptkbp:metallicity |
−0.01
|
gptkbp:otherName |
Alderamin
|
gptkbp:parallax |
66.50 mas
|
gptkbp:rightAscension |
21h 18m 34.8s
|
gptkbp:rotationPeriod |
246 km/s
|
gptkbp:spectralType |
A7IV-V
|
gptkbp:temperature |
7,740 K
|
gptkbp:variableStar |
yes
|
gptkbp:bfsParent |
gptkb:Cephei
gptkb:Céphée gptkb:Vosk |
gptkbp:bfsLayer |
7
|