|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:age
|
approximately 13 billion years
most open clusters
|
|
gptkbp:apparent_magnitude
|
6.5
|
|
gptkbp:conducts_research_on
|
galactic evolution studies
|
|
gptkbp:contains_star
|
yes
type II
over 150,000 stars
little to no recent star formation
|
|
gptkbp:declination
|
-00° 49′ 00″
|
|
gptkbp:diameter
|
approximately 175 light years
|
|
gptkbp:discovered_by
|
gptkb:Jean-Marie_Pierre_Méchain
|
|
gptkbp:discovery_year
|
September 12, 1780
|
|
gptkbp:distance_from_earth
|
37,000 light years
|
|
gptkbp:exhibition
|
gptkb:NGC_7089
gptkb:the_New_General_Catalogue
gptkb:Messier_catalog
|
|
gptkbp:has_color
|
0.90
|
|
gptkbp:has_spectral_type
|
various types
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 2
|
|
gptkbp:included
|
astronomy textbooks
|
|
gptkbp:is_a
|
deep-sky object
|
|
gptkbp:is_analyzed_in
|
stellar populations
|
|
gptkbp:is_associated_with
|
dark matter research
|
|
gptkbp:is_considered_as
|
a benchmark for stellar evolution models
|
|
gptkbp:is_examined_in
|
stellar evolution theories
|
|
gptkbp:is_explored_in
|
astrophysicists
|
|
gptkbp:is_known_for
|
its dense core
|
|
gptkbp:is_located_near
|
the celestial equator
|
|
gptkbp:is_noted_for
|
its ancient stars
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
optical telescopes
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_Galaxy
gptkb:the_Local_Group
astronomical surveys
the Milky Way halo
|
|
gptkbp:is_referenced_in
|
gptkb:academic_journals
|
|
gptkbp:is_studied_for
|
its globular cluster dynamics
|
|
gptkbp:is_studied_in
|
stellar dynamics
|
|
gptkbp:is_used_in
|
cosmological simulations
stellar population studies
|
|
gptkbp:is_visible_from
|
southern hemisphere
with binoculars
|
|
gptkbp:located_in
|
constellation Aquarius
|
|
gptkbp:mass
|
approximately 1.5 million solar masses
|
|
gptkbp:metallicity
|
[ Fe/ H] = -0.24
|
|
gptkbp:notable_features
|
high concentration of stars
|
|
gptkbp:photography
|
amateur astronomers
|
|
gptkbp:population_density
|
high star density
|
|
gptkbp:research
|
observed by William Herschel
|
|
gptkbp:right_ascension
|
21h 33m 27.0s
|
|
gptkbp:type
|
gptkb:Population_II_star_cluster
|
|
gptkbp:bfsParent
|
gptkb:Aquarius
|
|
gptkbp:bfsLayer
|
4
|