Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
|
| gptkbp:apparentMagnitude |
5.05
|
| gptkbp:catalogue |
gptkb:Henry_Draper_Catalogue
gptkb:Hipparcos_Catalogue gptkb:Bright_Star_Catalogue |
| gptkbp:constellation |
gptkb:Cepheus
|
| gptkbp:declination |
+59° 24′ 52.3″
|
| gptkbp:diameter |
18.8 solar radii
|
| gptkbp:discoveredBy |
gptkb:William_Herschel
|
| gptkbp:discoveredIn |
1781
|
| gptkbp:distanceFromEarth |
1,980 light years
|
| https://www.w3.org/2000/01/rdf-schema#label |
Lambda Cephei
|
| gptkbp:luminosity |
398,000 times solar luminosity
|
| gptkbp:mass |
40 solar masses
|
| gptkbp:metallicity |
-0.13 [Fe/H]
|
| gptkbp:name |
gptkb:Lambda_Cephei
|
| gptkbp:otherDesignation |
gptkb:HD_210839
HIP 109556 HR 8469 |
| gptkbp:parallax |
1.65 mas
|
| gptkbp:radialVelocity |
-75.0 km/s
|
| gptkbp:rightAscension |
22h 11m 30.58s
|
| gptkbp:rotationPeriod |
210 km/s
|
| gptkbp:spectralType |
O6.5If(n)p
|
| gptkbp:temperature |
36,000 K
|
| gptkbp:variableStar |
gptkb:Alpha_Cygni_variable
|
| gptkbp:bfsParent |
gptkb:HR_8461
|
| gptkbp:bfsLayer |
8
|