Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:blue_hypergiant
gptkb:star |
| gptkbp:apparentMagnitude |
8.79
|
| gptkbp:catalogue |
2MASS J20324099+4114289
BD+40°4220 |
| gptkbp:constellation |
gptkb:Cygnus
|
| gptkbp:declination |
+41° 14′ 29″
|
| gptkbp:diameter |
~246 solar radii
|
| gptkbp:discoveredBy |
gptkb:Nicholas_Mayall
|
| gptkbp:discoveredIn |
1949
|
| gptkbp:distanceFromEarth |
~5,700 light-years
|
| gptkbp:locatedIn |
gptkb:Cygnus_OB2_association
|
| gptkbp:luminosity |
~1,800,000 times Sun
|
| gptkbp:mass |
~110 solar masses
|
| gptkbp:otherName |
MT 304
Schulte 12 |
| gptkbp:rightAscension |
20h 32m 41.0s
|
| gptkbp:spectralType |
B3-4 Ia+
|
| gptkbp:temperature |
~13,700 K
|
| gptkbp:variableStar |
yes
|
| gptkbp:bfsParent |
gptkb:Cygnus_OB2
|
| gptkbp:bfsLayer |
8
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cygnus OB2 #12
|