Properties (52)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
globular cluster
|
| gptkbp:age |
approximately 11 billion years
|
| gptkbp:contains |
approximately 100,000
variable stars |
| gptkbp:established |
gptkb:Charles_Messier
|
| gptkbp:firstSeason |
Messier catalog
|
| gptkbp:geographicalFeature |
l = 240.0°, b = -30.0°
|
| gptkbp:has |
a core radius of about 2.5 arcminutes
a half-light radius of about 4.5 arcminutes a tidal radius of about 30 arcminutes |
| gptkbp:hasRecognition |
9.5
|
| gptkbp:hasVariants |
-26° 45' 0"
|
| https://www.w3.org/2000/01/rdf-schema#label |
Messier 68
|
| gptkbp:image |
Hubble_Space_Telescope_image_available
|
| gptkbp:is |
a target for future space missions
a target for amateur astronomers a subject of astrophysical studies a cluster that has been analyzed for its stellar dynamics a cluster that has been studied for its chemical composition a cluster that has been used to test stellar evolution models a candidate for dark matter studies a cluster that exhibits mass segregation a cluster with a complex dynamical history a member of the Milky Way's halo a potential host for exotic stars a site of stellar evolution research a cluster with a significant number of blue stragglers a cluster that has been studied for its gravitational interactions a cluster that has been observed in various wavelengths often studied for its stellar population one of the fainter Messier objects a cluster that contributes to our understanding of globular clusters a cluster that has been included in many astronomical surveys a source of information about early galaxy formation a globular cluster with a high concentration of stars a cluster that has been observed for its light curve variations a_part_of_the_Local_Group_of_galaxies a_cluster_that_has_been_used_to_study_the_formation_of_the_Milky_Way. a_cluster_that_has_been_included_in_the_Hubble_Space_Telescope's_observations |
| gptkbp:isAccessibleBy |
southern hemisphere
|
| gptkbp:isLocatedNear |
the center of the Milky Way
|
| gptkbp:isNotableFor |
its low metallicity
|
| gptkbp:isPartOf |
Milky Way galaxy
|
| gptkbp:legalStatus |
12h 38m 27s
|
| gptkbp:length |
approximately 33,000 light years
|
| gptkbp:lighting |
moderately bright for a globular cluster
|
| gptkbp:locatedIn |
constellation_Hydra
|
| gptkbp:naturalResources |
[Fe/H] = -1.5
|
| gptkbp:relatedTo |
gptkb:Messier_69
|
| gptkbp:releaseYear |
1780
|
| gptkbp:tastingNotes |
best viewed in spring months
|
| gptkbp:type |
Population II star cluster
|