|
gptkbp:instanceOf
|
open cluster
|
|
gptkbp:age
|
approximately 220 million years
|
|
gptkbp:associatedWith
|
Milky Way
|
|
gptkbp:bestTimeToVisit
|
summer months
|
|
gptkbp:contains
|
gptkb:red_giants
gptkb:blue_stragglers
variable stars
approximately 150
main sequence stars
giant stars
supergiant stars
|
|
gptkbp:established
|
gptkb:Charles_Messier
|
|
gptkbp:geographicalFeature
|
l = 6.5°, b = -8.5°
|
|
gptkbp:hasGoals
|
gptkb:M67
gptkb:M45
M26
M44
M11
|
|
gptkbp:hasRecognition
|
6.2
|
|
gptkbp:hasSibling
|
approximately 20 arcminutes
|
|
gptkbp:hasStaff
|
irregular
|
|
gptkbp:hasVariants
|
-19° 01′ 00″
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 23
|
|
gptkbp:isAccessibleBy
|
gptkb:Northern_Hemisphere
gptkb:Southern_Hemisphere
|
|
gptkbp:isFiledIn
|
B-V = 0.5
U-B = -0.1
|
|
gptkbp:isLocatedIn
|
Messier catalog
|
|
gptkbp:isPartOf
|
Milky Way Galaxy
|
|
gptkbp:legalStatus
|
18h 06m 30s
|
|
gptkbp:length
|
approximately 2,200 light years
|
|
gptkbp:locatedIn
|
gptkb:Sagittarius_constellation
|
|
gptkbp:notableFeature
|
M23-1
M23-2
M23-3
M23-4
M23-5
|
|
gptkbp:officialResidence
|
light pollution
|
|
gptkbp:previousName
|
NGC 6494
|
|
gptkbp:releaseYear
|
1764
|
|
gptkbp:type
|
various types
open star cluster
|
|
gptkbp:visibility
|
binoculars
|
|
gptkbp:visitedBy
|
gptkb:Hubble_Space_Telescope
|