Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
|
| gptkbp:age |
300
|
| gptkbp:apparentMagnitude |
2.23
|
| gptkbp:BayerDesignation |
gptkb:Alpha_Coronae_Borealis
|
| gptkbp:constellation |
gptkb:Corona_Borealis
|
| gptkbp:declination |
+26° 42′ 52″
|
| gptkbp:diameter |
2.89
|
| gptkbp:discoveredBy |
known since antiquity
|
| gptkbp:distanceFromEarth |
75
|
| gptkbp:FlamsteedDesignation |
gptkb:5_Coronae_Borealis
|
| gptkbp:hasCompanion |
gptkb:Alphecca_B
|
| gptkbp:hasExoplanet |
false
|
| https://www.w3.org/2000/01/rdf-schema#label |
Alphecca
|
| gptkbp:luminosity |
74
|
| gptkbp:mass |
2.58
|
| gptkbp:metallicity |
-0.02
|
| gptkbp:otherName |
gptkb:Gemma
gptkb:Alpha_Coronae_Borealis |
| gptkbp:parallax |
43.46
|
| gptkbp:properMotionRA |
-68.95
-98.18 |
| gptkbp:radialVelocity |
-10.6
|
| gptkbp:rightAscension |
15h 34m 41.3s
|
| gptkbp:spectralType |
A0V
|
| gptkbp:temperature |
9700
|
| gptkbp:variableType |
binary star system
|
| gptkbp:visibleToNakedEye |
true
|
| gptkbp:bfsParent |
gptkb:Corona_Borealis
|
| gptkbp:bfsLayer |
7
|