NGC 6342
Globular cluster in the constellation Ophiuchus
From Wikipedia, the free encyclopedia
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 | |
|---|---|
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 |
NGC 6342 is classified as metal-rich, yet has only one generation of stars.[3]
