Q840005
Sign in to saveAlso known as New General Catalogue 6352, Caldwell 81, C 81
globular cluster in the constellation Ara
Key facts
- Class
- XI:
- Constellation
- Ara
- Right ascension
- 17 25 29.11
- Declination
- –48 ° 25 ′ 19.8 ″
- Distance
- 18.3 kly (5.6 kpc )
- Apparent magnitude v
- +7.8
- Apparent dimensions v
- 7.1 ′
- Mass
- 3.7 × 10 M ☉
- Tidal radius
- 10.5″
- Metallicity
- [ Fe/H ] = –0.70 dex
- Estimated age
- 12.67 Gyr
- Other designations
- Caldwell 81, Cr 328, NGC 6352
via Wikipedia infobox
Wikidata facts
- Instance of
- globular cluster
- Constellation
- Ara
- Image
- NGC 6352.jpg
Show 12 more facts
- Commons category
- NGC 6352
- discoverer or inventor
- James Dunlop
- time of discovery or invention
- 1826-05-14
- metallicity
- -0.80
- catalog code
- GCl 64
- right ascension component of proper motion
- -5.04
- apparent magnitude
- 6.562
- right ascension
- 261.371292
- declination
- -48.422167
- epoch
- J2000.0
- radial velocity
- -114.6
- declination component of proper motion
- -2.34
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 6352 (also known as Caldwell 81) is a globular cluster of stars in the southern constellation of Ara, located approximately 18.3 kly from the Sun. It was discovered by Scottish astronomer James Dunlop on May 14, 1826. The cluster has a Shapley–Sawyer Concentration Class of XI:. A telescope with a 15 cm (5.9 in) aperture is required to resolve the stars within this loose cluster.
This cluster is about 12.67 billion years old with two distinct stellar populations; the second generation is only around 10 million years younger than the first. It lies approximately 13 kly (4 kpc) from the Galactic Center and 1.6 kly (0.5 kpc) from the galactic plane. The orbital motion of this cluster through the Milky Way suggests it is a member of the bulge or disk population. It is relatively metal-rich for an object of this class, having a metallicity of –0.70. The core radius is 49.8″ and the tidal radius is 10.5″.
Excerpted from Wikipedia’s “Q840005” article, available under the CC BY-SA 4.0 licence.