|
gptkbp:instanceOf
|
gptkb:open_cluster
|
|
gptkbp:age
|
~11.65 billion years
|
|
gptkbp:alsoKnownAs
|
gptkb:M13
gptkb:Great_Hercules_Cluster
|
|
gptkbp:angularSize
|
20 arcminutes
|
|
gptkbp:apparentMagnitude
|
5.8
|
|
gptkbp:bestViewedIn
|
gptkb:Northern_Hemisphere
|
|
gptkbp:cataloguedIn
|
gptkb:Charles_Messier
|
|
gptkbp:catalogueNumber
|
gptkb:Messier_13
|
|
gptkbp:contains
|
red giant stars
variable stars
blue straggler stars
|
|
gptkbp:declination
|
+36° 27′ 35.5″
|
|
gptkbp:discoveredBy
|
gptkb:Edmond_Halley
|
|
gptkbp:discoveredIn
|
1714
|
|
gptkbp:distanceFromEarth
|
~22,200 light-years
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 13
|
|
gptkbp:locatedIn
|
constellation Hercules
|
|
gptkbp:mass
|
~600,000 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = –1.53
|
|
gptkbp:NGCNumber
|
gptkb:NGC_6205
|
|
gptkbp:notableFeature
|
contains the Propeller, a dark lane feature
|
|
gptkbp:observedBy
|
gptkb:William_Herschel
|
|
gptkbp:partOf
|
gptkb:Milky_Way_Galaxy
|
|
gptkbp:rating
|
several hundred thousand
|
|
gptkbp:rightAscension
|
16h 41m 41.24s
|
|
gptkbp:type
|
Class V globular cluster
|
|
gptkbp:usedIn
|
gptkb:Arecibo_message_(1974)_as_a_target_direction
|
|
gptkbp:visibleToNakedEye
|
yes
|
|
gptkbp:bfsParent
|
gptkb:Bootes
gptkb:Globular_cluster
gptkb:M13
gptkb:M13_globular_star_cluster
gptkb:Charles_Messier
|
|
gptkbp:bfsLayer
|
6
|