Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
|
| gptkbp:apparentMagnitude |
3.23
|
| gptkbp:catalogueNumber |
gptkb:HR_8238
gptkb:HD_205021 gptkb:HIP_106032 |
| gptkbp:contains |
gptkb:Beta_Cephei_A
gptkb:Beta_Cephei_B |
| gptkbp:declination |
+70° 33′ 38″
|
| gptkbp:discoveredBy |
gptkb:John_Goodricke
|
| gptkbp:discoveredIn |
1784
|
| gptkbp:distanceFromEarth |
690 light years
|
| https://www.w3.org/2000/01/rdf-schema#label |
Beta Cephei system
|
| gptkbp:locatedIn |
gptkb:constellation_Cepheus
|
| gptkbp:luminosity |
~15,000 times Sun
|
| gptkbp:massOfPrimary |
~12 solar masses
|
| gptkbp:orbitType |
90 years
|
| gptkbp:otherName |
gptkb:Alfirk
|
| gptkbp:primaryStarName |
gptkb:Beta_Cephei_A
|
| gptkbp:properMotionRA |
Yes
|
| gptkbp:rightAscension |
21h 28m 39.6s
|
| gptkbp:secondaryStarName |
gptkb:Beta_Cephei_B
|
| gptkbp:spectralType |
B2IIIev
|
| gptkbp:variableType |
gptkb:Beta_Cephei_variable
|
| gptkbp:bfsParent |
gptkb:Beta_Cephei_B
|
| gptkbp:bfsLayer |
8
|