NGC 6352 information

NGC 6352
NGC 6352
Observation data (J2000 epoch)
Class	XI:
Constellation	Ara
Right ascension	17h 25m 29.11s
Declination	–48° 25′ 19.8″
Distance	18.3 kly (5.6 kpc)
Apparent magnitude (V)	+7.8
Apparent dimensions (V)	7.1′
Physical characteristics
Mass	3.7×104 M☉
Tidal radius	10.5″
Metallicity	= –0.70 dex
Estimated age	12.67 Gyr
Other designations	Caldwell 81, Cr 328, NGC 6352
	See also: Globular cluster, List of globular clusters

NGC 6352 (also known as Caldwell 81) is a globular cluster of stars in the southern constellation of Ara, located approximately 18.3 kly^[3] from the Sun. It was discovered by Scottish astronomer James Dunlop on May 14, 1826.^[10] The cluster has a Shapley–Sawyer Concentration Class of XI:.^[1] A telescope with a 15 cm (5.9 in) aperture is required to resolve the stars within this loose cluster.^[4]

This cluster is about 12.67^[8] billion years old with two distinct stellar populations; the second generation is only around 10 million years younger than the first.^[3] It lies approximately 13 kly (4 kpc) from the Galactic Center and 1.6 kly (0.5 kpc) from the galactic plane.^[11] The orbital motion of this cluster through the Milky Way suggests it is a member of the bulge or disk population.^[12] It is relatively metal-rich for an object of this class,^[3] having a metallicity of –0.70.^[8] The core radius is 49.8″^[3] and the tidal radius is 10.5″.^[7]

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NGC 6352 information

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NGC 6352

New General Catalogue

Caldwell catalogue

NGC 6357

NGC 6188

NGC 6383

List of globular clusters

List of NGC objects

Melotte catalogue

NGC 6240

C81

NGC 6144

NGC 6397

NGC 6261

NGC 6331

NGC 6231

NGC 6166

Messier 4

Messier 7

NGC 6302

Messier 9

Messier 14

NGC 6334

NGC 6193

NGC 6342

NGC 6207

NGC 6401

Messier 92

NGC 6352

Observation data (J2000 epoch)
Class	XI:^[1]
Constellation	Ara
Right ascension	17^h 25^m 29.11^s^[2]
Declination	–48° 25′ 19.8″^[2]
Distance	18.3 kly (5.6 kpc)^[3]
Apparent magnitude (V)	+7.8^[4]
Apparent dimensions (V)	7.1′^[5]
Physical characteristics
Mass	3.7×10⁴^[6] `M`_☉
Tidal radius	10.5″^[7]
Metallicity	${\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}$ = –0.70^[8] dex
Estimated age	12.67 Gyr^[8]
Other designations	Caldwell 81, Cr 328, NGC 6352^[9]
See also: Globular cluster, List of globular clusters