|
gptkbp:instance_of
|
gptkb:open_cluster
gptkb:star
|
|
gptkbp:age
|
gptkb:the_Sun
approximately 13 billion years
approximately 12 billion years
|
|
gptkbp:apparent_magnitude
|
6.1
6.4
|
|
gptkbp:contains
|
gptkb:white_dwarf_stars
variable stars
red giant stars
hundreds of thousands of stars
|
|
gptkbp:contains_star
|
yes
type II
approximately 100,000 stars
|
|
gptkbp:declination
|
-26° 24' 36"
-26° 24' 00"
|
|
gptkbp:diameter
|
12 arcminutes
approximately 75 light years
|
|
gptkbp:discovered_by
|
gptkb:James_Dunlop
|
|
gptkbp:discovery_year
|
1826
|
|
gptkbp:distance_from_earth
|
approximately 13,000 light years
approximately 7,200 light years
|
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
|
|
gptkbp:first_appearance
|
gptkb:Jean_Philippe_Loys_de_Chéseaux
|
|
gptkbp:has_color
|
1.0
0.83
|
|
gptkbp:has_radius
|
about 1.5 arcminutes
about 3.5 arcminutes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 6121
|
|
gptkbp:is_a
|
gptkb:astronomy
gptkb:star
|
|
gptkbp:is_associated_with
|
gptkb:dark_matter
the Galactic center
the Milky Way halo
|
|
gptkbp:is_considered
|
one of the closest globular clusters
|
|
gptkbp:is_known_for
|
its bright core
its high density of stars
|
|
gptkbp:is_located_at
|
right ascension 16h 22m 36s, declination -26° 24' 36"
Galactic coordinates (l, b): (348.5°, -16.2°)
|
|
gptkbp:is_located_near
|
the center of the Milky Way
|
|
gptkbp:is_notable_for
|
its proximity to Earth
|
|
gptkbp:is_noted_for
|
its rich star field
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
various wavelengths
photometry studies
|
|
gptkbp:is_part_of
|
gptkb:Galactic_Halo
gptkb:Milky_Way's_globular_cluster_system
gptkb:Milky_Way_galaxy
the Milky Way's globular cluster system
the Galactic bulge
the Scorpius constellation
|
|
gptkbp:is_popular_among
|
amateur astronomers
|
|
gptkbp:is_studied_for
|
stellar populations
|
|
gptkbp:is_studied_in
|
stellar evolution
|
|
gptkbp:is_used_for
|
astrophysical research
|
|
gptkbp:is_used_in
|
astrophysics research
stellar dynamics studies
|
|
gptkbp:is_visible_from
|
gptkb:Earth
gptkb:Scorpius_constellation
gptkb:sunglasses
clear nights
small telescopes
|
|
gptkbp:known_as
|
gptkb:M4
|
|
gptkbp:located_in
|
gptkb:Milky_Way
constellation Scorpius
|
|
gptkbp:mass
|
approximately 500,000 solar masses
|
|
gptkbp:metallicity
|
[ Fe/ H] = -1.16
-1.0 dex
|
|
gptkbp:population_density
|
high
|
|
gptkbp:right_ascension
|
16h 22m 36s
16h 22m 30s
|
|
gptkbp:scientific_classification
|
gptkb:item
|
|
gptkbp:type
|
gptkb:Population_II_star_cluster
gptkb:star
|
|
gptkbp:bfsParent
|
gptkb:M4
|
|
gptkbp:bfsLayer
|
5
|