Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:open_cluster
|
| gptkbp:alsoKnownAs |
gptkb:Messier_55
|
| gptkbp:angularSize |
19 arcminutes
|
| gptkbp:apparentMagnitude |
7.42
|
| gptkbp:catalogue |
gptkb:Messier_Catalogue
gptkb:New_General_Catalogue |
| gptkbp:constellation |
gptkb:Sagittarius
|
| gptkbp:coreRadius |
3.3 light-years
|
| gptkbp:declination |
-30° 57′ 43″
|
| gptkbp:diameter |
48 light-years
|
| gptkbp:discoveredBy |
gptkb:Nicolas-Louis_de_Lacaille
|
| gptkbp:discoveredIn |
1752
|
| gptkbp:distanceFromEarth |
17,600 light-years
|
| gptkbp:epoch |
gptkb:J2000
|
| https://www.w3.org/2000/01/rdf-schema#label |
NGC 6809
|
| gptkbp:locatedIn |
gptkb:Milky_Way
|
| gptkbp:mass |
269,000 solar masses
|
| gptkbp:metallicity |
-1.94
|
| gptkbp:rightAscension |
19h 40m 0.6s
|
| gptkbp:shapleySawyerConcentrationClass |
XI
|
| gptkbp:bfsParent |
gptkb:John_Herschel
|
| gptkbp:bfsLayer |
4
|