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gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:age
|
approximately 10 billion years
most open clusters
|
|
gptkbp:apparent_magnitude
|
+8.3
|
|
gptkbp:contains_star
|
approximately 100,000 stars
|
|
gptkbp:declination
|
+18° 45' 00"
|
|
gptkbp:diameter
|
approximately 100 light years
|
|
gptkbp:discovered_by
|
gptkb:Pierre_Méchain
|
|
gptkbp:discovery_year
|
gptkb:1780
|
|
gptkbp:distance_from_earth
|
approximately 13,000 light years
|
|
gptkbp:exhibition
|
gptkb:Messier_catalog
the New General Catalogue (NGC)
|
|
gptkbp:first_appearance
|
gptkb:William_Herschel
|
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gptkbp:has_color
|
B-V = 0.95
|
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gptkbp:has_high_density
|
of stars in the core
|
|
gptkbp:has_low_metallicity
|
compared to other clusters
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 71
|
|
gptkbp:included
|
various astronomical surveys
|
|
gptkbp:is_analyzed_in
|
stellar dynamics
|
|
gptkbp:is_associated_with
|
the Sagittarius constellation region
|
|
gptkbp:is_considered
|
a target for deep-sky observations
|
|
gptkbp:is_examined_in
|
professional astronomers
|
|
gptkbp:is_located_at
|
galactic coordinates l= 60.0°, b= -5.0°
|
|
gptkbp:is_located_near
|
the constellation Vulpecula
|
|
gptkbp:is_notable_for
|
its loose structure
|
|
gptkbp:is_noted_for
|
its unique star formation history
its faintness compared to other clusters
|
|
gptkbp:is_observed_in
|
amateur astronomers
large telescopes
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_galaxy
gptkb:the_Local_Group
the Milky Way halo
the Milky Way's globular cluster system
the Galactic halo population
|
|
gptkbp:is_studied_for
|
its stellar populations
|
|
gptkbp:is_studied_in
|
stellar evolution research
|
|
gptkbp:is_used_in
|
stellar population studies
|
|
gptkbp:is_visible_from
|
with binoculars
the summer sky
|
|
gptkbp:known_as
|
NGC 6838
|
|
gptkbp:located_in
|
constellation Sagitta
|
|
gptkbp:metallicity
|
-0.5 dex
|
|
gptkbp:photography
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:right_ascension
|
19h 53m 24s
|
|
gptkbp:scientific_classification
|
type II globular cluster
|
|
gptkbp:type
|
gptkb:star
|
|
gptkbp:bfsParent
|
gptkb:Messier_series
|
|
gptkbp:bfsLayer
|
7
|