NGC 6342

Short description: A Globular cluster in the constellation Ophiuchus

NGC 6342

NGC 6342 as seen through the Hubble Space Telescope

Observation data (J2000 epoch)
Class| IV[1]
Constellation| Ophiuchus
Right ascension|  17h 21m 10.1s[2]
Declination| −19° 35′ 15″[2]
Apparent magnitude (V)| 9.66[1]
Apparent dimensions (V)| 4.40′
Physical characteristics
Absolute magnitude| −6.42[1]
Metallicity| [Fe/H] = −0.55[3] dex
Other designations| GCL 61 and ESO 587-SC6
See also: Globular cluster, List of globular clusters

NGC 6342 is a globular cluster located in the constellation Ophiuchus. Its Shapley–Sawyer Concentration Class is IV,[1] and it was discovered by the German-born British astronomer William Herschel on 28 May 1786.[4] It is at a distance of 28,000 light years away from Earth.[5][6]

NGC 6342 is classified as metal-rich, yet has only one generation of stars.[3]

## See also

* List of NGC objects (6001–7000)
* List of NGC objects
* NGC 6366
* Messier 71

## References

1. ↑ 1.0 1.1 1.2 1.3 "Revised NGC Data for NGC 6342". http://spider.seds.org/ngc/revngcic.cgi?NGC6342.
2. ↑ 2.0 2.1 "Object No. 1 - NGC 6342". NASA/IPAC. http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+6342&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
3. ↑ 3.0 3.1 Johnson, Christian I.; Caldwell, Nelson; Rich, R. Michael; Pilachowski, Catherine A.; Hsyu, Tiffany (2016), "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366", The Astronomical Journal 152 (1): 21, doi:10.3847/0004-6256/152/1/21, Bibcode: 2016AJ....152...21J
4. ↑ "NGC 6342 (= GCL 61)". http://cseligman.com/text/atlas/ngc63.htm#6342.
5. ↑ "NGC 6342". http://spider.seds.org/spider/MWGC/n6342.html.
6. ↑ "The globular cluster NGC 6342". https://in-the-sky.org/data/object.php?id=5097.

## External links

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