M21

URI: https://gptkb.org/entity/M21

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:open_cluster
gptkbp:age	6.6 million years
gptkbp:alsoKnownAs	gptkb:Messier_21
gptkbp:angularSize	13 arcminutes
gptkbp:apparentMagnitude	6.5
gptkbp:catalogue	gptkb:Messier_Catalogue
gptkbp:constellation	gptkb:Sagittarius
gptkbp:declination	-22° 29′ 24″
gptkbp:discoveredBy	gptkb:Charles_Messier
gptkbp:discoveredIn	1764
gptkbp:distanceFromEarth	4250 light years
gptkbp:hasViewOf	astronomer
https://www.w3.org/2000/01/rdf-schema#label	M21
gptkbp:locatedIn	gptkb:Sagittarius
gptkbp:nearestHigherNeighbor	gptkb:Trifid_Nebula_(M20)
gptkbp:partOf	gptkb:Milky_Way
gptkbp:rightAscension	18h 04m 13s
gptkbp:star	57
gptkbp:bfsParent	gptkb:Hongo-sanchome_Station gptkb:Hongo-sanchome gptkb:Core_Set_2021 gptkb:Chorlton gptkb:Chorlton-cum-Hardy gptkb:Chorlton-cum-Hardy_(part) gptkb:Chorltonville gptkb:Firswood gptkb:Merseybank gptkb:Wilbraham_Road gptkb:Istanbul_Metro gptkb:армия_США
gptkbp:bfsLayer	6