NGC 6342
Appearance
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 | = −0.55[3] dex |
Other designations | GCL 61 and ESO 587-SC6 |
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
[edit]References
[edit]- ^ a b c d "Revised NGC Data for NGC 6342". Seds. Retrieved 14 October 2015.
- ^ a b "Object No. 1 - NGC 6342". NASA/IPAC extragalactic database. NASA/IPAC. Retrieved 14 October 2015.
- ^ a b 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, arXiv:1606.08491, Bibcode:2016AJ....152...21J, doi:10.3847/0004-6256/152/1/21, S2CID 19812549
- ^ "NGC 6342 (= GCL 61)". cseligman. Retrieved 14 October 2015.
- ^ "NGC 6342". Seds. Retrieved 14 October 2015.
- ^ "The globular cluster NGC 6342". In-the-sky. Retrieved 14 October 2015.
External links
[edit]Media related to NGC 6342 at Wikimedia Commons