Statements (21)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:open_cluster
|
| gptkbp:age |
about 25 million years
|
| gptkbp:alternativeName |
gptkb:NGC_581
gptkb:Cr_14 gptkb:Melotte_7 |
| gptkbp:angularSize |
6 arcminutes
|
| gptkbp:apparentMagnitude |
7.4
|
| gptkbp:bestViewedIn |
autumn
|
| gptkbp:catalogue |
gptkb:Messier_Catalogue
gptkb:NGC_581 |
| gptkbp:contains |
about 40 stars
|
| gptkbp:declination |
+60° 42′ 30″
|
| gptkbp:discoveredBy |
gptkb:Pierre_Méchain
|
| gptkbp:discoveredIn |
1781
|
| gptkbp:distanceFromEarth |
about 8,000 to 10,000 light-years
|
| gptkbp:hasViewOf |
gptkb:Northern_Hemisphere
|
| https://www.w3.org/2000/01/rdf-schema#label |
Messier 103
|
| gptkbp:locatedIn |
constellation Cassiopeia
|
| gptkbp:rightAscension |
01h 33m 23s
|
| gptkbp:bfsParent |
gptkb:Pierre_Méchain
|
| gptkbp:bfsLayer |
7
|