Key facts
- Class
- VIII
- Constellation
- Telescopium
- Right ascension
- 18 18 37.60
- Declination
- –52 ° 12 ′ 56.8 ″
- Apparent dimensions v
- 7.9'
- Metallicity
- [ Fe/H ] = −1.53 ± 0.08 dex
- Estimated age
- 11.6 ± 1.7 Gyr
via Wikipedia infobox
Wikidata facts
- Instance of
- star
- Constellation
- Telescopium
- Image
- NGC 6584 HST 10775 R814B606.png
Show 12 more facts
- discoverer or inventor
- James Dunlop
- time of discovery or invention
- 1826-06-05
- Commons category
- NGC 6584
- catalog code
- GCl 92
- declination component of proper motion
- -5.7900
- apparent magnitude
- 8.947
- right ascension
- 274.656667
- declination
- -52.215778
- epoch
- J2000.0
- radial velocity
- 222.9
- metallicity
- -1.50
- right ascension component of proper motion
- -0.220
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 6584 is a globular cluster in the constellation Telescopium that lies near Theta Arae and is 45000 light-years distant. It is an Oosterhoff type I cluster, and contains at least 69 variable stars, most of which are RR Lyrae variables: 46 stars were identified as RRab variables; 15 as RRc variables, 1 RRe variable, 4 eclipsing binaries and 3 long period variables. NGC 6584 is about 4 kpc from the Galactic Center and about 2.7 kpc from the Galactic plane.
As is typical for metal-poor globular clusters, NGC 6584 has an enhanced concentration of alpha elements relative to iron.
Excerpted from Wikipedia’s “NGC 6584” article, available under the CC BY-SA 4.0 licence.