Messier 13

GPTKB entity

Statements (56)
Predicate Object
gptkbp:instance_of gptkb:star
gptkbp:age approximately 11.8 billion years
gptkbp:apparent_magnitude 5.8
gptkbp:associated_with gptkb:Milky_Way_galaxy
gptkbp:contains_star yes
type II
complex history
approximately 300,000 stars
gptkbp:coordinates RA 16h 41m 41.35s, Dec +36° 27′ 36.1″
gptkbp:country no
gptkbp:diameter approximately 145 light years
gptkbp:discovered_by gptkb:Charles_Messier
gptkbp:discovery_year gptkb:1764
gptkbp:distance_from_earth approximately 25,000 light years
gptkbp:exhibition gptkb:Messier_catalog
gptkb:NGC_6205
gptkbp:first_appearance gptkb:Johann_Elert_Bode
gptkbp:has_color 0.9
B-V = 0.9
gptkbp:has_main_sequence_stars yes
gptkbp:has_red_giant_stars yes
gptkbp:has_spectral_type various types
G and K type stars
gptkbp:has_supernova no
gptkbp:has_white_dwarf_stars yes
https://www.w3.org/2000/01/rdf-schema#label Messier 13
gptkbp:is_located_at Declination +36° 27′ 36″
Right Ascension 16h 41m 41.35s
gptkbp:is_located_near gptkb:Hercules_constellation
gptkbp:is_noted_for its beauty in photographs
gptkbp:is_observed_in gptkb:Hubble_Space_Telescope
summer months
gptkbp:is_one_of brightest globular clusters
gptkbp:is_part_of gptkb:Messier_series
gptkb:Milky_Way_galaxy
Milky Way halo
gptkbp:is_popular_among amateur astronomers
gptkbp:is_studied_in stellar evolution
gptkbp:is_used_in astrophotography
gptkbp:is_visible_from gptkb:Northern_Hemisphere
gptkb:sunglasses
naked eye
gptkbp:known_as gptkb:NGC_6205
gptkbp:located_in gptkb:Hercules_constellation
gptkbp:metallicity [ Fe/ H] = -1.5
gptkbp:notable_feature high density of stars
contains a large number of variable stars
gptkbp:photography various amateur astronomers
gptkbp:population_density high star density
gptkbp:research observed by many astronomers
best viewed in dark skies
gptkbp:targets professional telescopes
gptkbp:type gptkb:Population_II_cluster
gptkbp:bfsParent gptkb:M13
gptkb:Messier_catalog
gptkbp:bfsLayer 5