|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:apparent_magnitude
|
6.9
|
|
gptkbp:contains
|
millisecond pulsars
several hundred thousand stars
|
|
gptkbp:declination
|
-23° 10′ 32″
|
|
gptkbp:diameter
|
approximately 93 light years
|
|
gptkbp:discovered_by
|
gptkb:Charles_Messier
gptkb:Caroline_Herschel
|
|
gptkbp:discovery_year
|
gptkb:1764
|
|
gptkbp:distance_from_earth
|
28,000 light years
approximately 28,000 light years
|
|
gptkbp:has
|
variable stars
core radius of 2.5 arcminutes
half-light radius of 4.5 arcminutes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 30
|
|
gptkbp:is_located_at
|
Galactic coordinates (l, b) = (25.5°, -30.0°)
Galactic coordinates (l, b) = (25.5°, -25.0°)
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_Galaxy
|
|
gptkbp:located_in
|
constellation Capricornus
|
|
gptkbp:mass
|
approximately 100,000 solar masses
approximately 200,000 solar masses
|
|
gptkbp:metallicity
|
[ Fe/ H] = -1.5
|
|
gptkbp:notable_feature
|
central density cusp
|
|
gptkbp:right_ascension
|
21h 40m 22s
|
|
gptkbp:type
|
gptkb:Population_II_star_cluster
Type II globular cluster
|
|
gptkbp:bfsParent
|
gptkb:Capricornus
|
|
gptkbp:bfsLayer
|
5
|