Statements (30)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
gptkb:red_supergiant |
| gptkbp:apparentMagnitude |
4.8
|
| gptkbp:catalogue |
gptkb:Henry_Draper_Catalogue
gptkb:Hipparcos_Catalogue gptkb:Bright_Star_Catalogue |
| gptkbp:constellation |
gptkb:Cassiopeia
|
| gptkbp:declination |
+60° 40′ 57″
|
| gptkbp:diameter |
~400 solar radii
|
| gptkbp:discoveredBy |
gptkb:William_Herschel
|
| gptkbp:discoveredIn |
1790
|
| gptkbp:distanceFromEarth |
~7,800 light-years
|
| gptkbp:evolutionaryStage |
post-red supergiant
|
| gptkbp:luminosity |
~330,000 times Sun
|
| gptkbp:mass |
~20 solar masses
|
| gptkbp:metallicity |
slightly subsolar
|
| gptkbp:otherDesignation |
gptkb:HD_217476
gptkb:HIP_113561 gptkb:HR_8752 |
| gptkbp:parallax |
0.42 mas
|
| gptkbp:properMotionRA |
-2.13 mas/yr
-1.13 mas/yr |
| gptkbp:radialVelocity |
-43 km/s
|
| gptkbp:rightAscension |
22h 59m 35.3s
|
| gptkbp:spectralType |
F2Ia+
|
| gptkbp:temperature |
~8,000 K
|
| gptkbp:variableType |
semiregular variable
|
| gptkbp:bfsParent |
gptkb:Cassiopeia
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
V509 Cassiopeiae
|