Statements (20)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:open_cluster
|
| gptkbp:age |
1.6 billion years
|
| gptkbp:alsoKnownAs |
NGC 6939
|
| gptkbp:angularSize |
8 arcminutes
|
| gptkbp:apparentMagnitude |
7.8
|
| gptkbp:bestViewedIn |
autumn
|
| gptkbp:cataloguedIn |
gptkb:Caldwell_catalogue
gptkb:NGC_catalogue |
| gptkbp:contains |
over 80 stars
|
| gptkbp:declination |
+60° 39′ 42″
|
| gptkbp:discoveredBy |
gptkb:William_Herschel
|
| gptkbp:discoveredIn |
1798
|
| gptkbp:distanceFromEarth |
3860 light-years
|
| gptkbp:hasViewOf |
gptkb:Northern_Hemisphere
|
| https://www.w3.org/2000/01/rdf-schema#label |
Caldwell 47
|
| gptkbp:locatedIn |
gptkb:constellation_Cepheus
|
| gptkbp:rightAscension |
20h 31m 30s
|
| gptkbp:bfsParent |
gptkb:NGC_6229
gptkb:NGC_6934 |
| gptkbp:bfsLayer |
7
|