|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:age
|
approximately 13 billion years
|
|
gptkbp:apparent_magnitude
|
gptkb:Yes
5.9
approximately 5.8
|
|
gptkbp:contains
|
millions of stars
approximately 100,000 stars
|
|
gptkbp:contains_star
|
gptkb:Type_II
gptkb:Yes
yes
|
|
gptkbp:declination
|
-26° 31′ 32″
|
|
gptkbp:diameter
|
approximately 75 light years
75 light years
|
|
gptkbp:discovered_by
|
gptkb:Jean-Marie_Méchain
gptkb:Jean-Philippe_Loys_de_Chéseaux
|
|
gptkbp:discovery_year
|
gptkb:1764
|
|
gptkbp:distance_from_earth
|
approximately 7,200 light years
7,200 light years
|
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
gptkb:Messier_catalog
|
|
gptkbp:has_black_holes
|
yes
|
|
gptkbp:has_blue_stragglers
|
yes
|
|
gptkbp:has_color
|
0.82
|
|
gptkbp:has_radius
|
2.5 arcminutes
4.0 arcminutes
|
|
gptkbp:has_red_giants
|
yes
|
|
gptkbp:has_rrlyrae_stars
|
gptkb:Yes
|
|
gptkbp:has_spectral_type
|
various
|
|
gptkbp:has_supernova
|
no
|
|
gptkbp:has_tidal_radius
|
20 arcminutes
|
|
gptkbp:has_white_dwarfs
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 4
|
|
gptkbp:included
|
NGC catalog
|
|
gptkbp:is_a
|
gptkb:star
|
|
gptkbp:is_analyzed_in
|
stellar populations
|
|
gptkbp:is_associated_with
|
gptkb:Scorpius_constellation
dark matter research
|
|
gptkbp:is_considered_as
|
a testbed for stellar dynamics
|
|
gptkbp:is_examined_in
|
stellar formation history
|
|
gptkbp:is_known_for
|
its low metallicity
its high density of stars
|
|
gptkbp:is_located_at
|
galactic coordinates (359.5°, -26.5°)
|
|
gptkbp:is_located_near
|
gptkb:Antares
|
|
gptkbp:is_notable_for
|
its high concentration of stars
|
|
gptkbp:is_noted_for
|
its bright core
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
amateur astronomers
various wavelengths
observed by various astronomers
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_globular_cluster_system
gptkb:Hertzsprung-Russell_diagram
gptkb:Milky_Way_Galaxy
Galactic halo
Milky Way halo
constellation Scorpius
|
|
gptkbp:is_popular_among
|
amateur astronomers
|
|
gptkbp:is_studied_for
|
stellar dynamics
|
|
gptkbp:is_studied_in
|
gptkb:astronomy
astrophysics
|
|
gptkbp:is_used_in
|
stellar evolution studies
|
|
gptkbp:is_visible_from
|
Southern Hemisphere
naked eye
southern hemisphere
small telescopes
|
|
gptkbp:located_in
|
gptkb:Scorpius
|
|
gptkbp:metallicity
|
low metallicity
[ Fe/ H] = -1.0
|
|
gptkbp:notable_feature
|
one of the closest globular clusters to Earth
|
|
gptkbp:orbit_type
|
no
|
|
gptkbp:photography
|
gptkb:astronomy
|
|
gptkbp:right_ascension
|
16h 23m 35.0s
|
|
gptkbp:targets
|
Hubble Space Telescope observations
|
|
gptkbp:type
|
gptkb:Population_II_star_cluster
|
|
gptkbp:bfsParent
|
gptkb:1764
|
|
gptkbp:bfsLayer
|
4
|