NGC 6384
Galaxy in the constellation of Ophiucus
From Wikipedia, the free encyclopedia
NGC 6384 is an intermediate barred spiral galaxy located about 77 million light-years away in the northern part of the constellation Ophiuchus. It was discovered on 10 June 1863 by German-British astronomer Albert Marth.[5]
| NGC 6384 | |
|---|---|
NGC 6384 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Ophiuchus |
| Right ascension | 17h 32m 24.302s[1] |
| Declination | +07° 03′ 36.97″[1] |
| Redshift | 0.005554[2] |
| Heliocentric radial velocity | 1,665 km/s[3] |
| Distance | 76.6 Mly (23.5 Mpc)[3] |
| Characteristics | |
| Type | SAB(r)bc[4] |
| Mass | 1.05 × 1011[4] M☉ |
| Size | 138,000 light years |
| Other designations | |
| IRAS 17299+0705, 2MASX J17322430+0703369, UGC 10891, MCG +01-45-001, PGC 60459, CGCG 055-007 | |
NGC 6384 has a morphological classification of SAB(r)bc,[4] indicating that it is a weakly barred galaxy (SAB) with an inner ring structure (r) orbiting the bar, and moderate to loosely wound spiral arms (bc).[6] The galaxy is inclined by an angle of 47° to the line of sight, along a position angle of 40°.[7] The estimated mass of the stars in this galaxy is 105 billion times the mass of the Sun.[4]
At one time NGC 6384 was considered a normal galaxy with no activity in the nucleus. However, it is now classified as a transition object (T2), which is thought to be a LINER-type galaxy whose emission-line spectra is contaminated by H II regions in the nucleus.[8]
Supernovae
Three supernovae have been observed in NGC 6384:
- SN 1971L (Type Ia, mag. 13) was discovered by W. Logan on 24 June 1971, located 27″ east and 20″ north of the nucleus.[9][10] It reached a peak visual magnitude of 12.85 around the end of June.[11] It was situated along a spiral arm, suggesting that the progenitor was not a member of the older, more evolved stellar population of the galaxy.[7]
- SN 2017drh (Type Ia, mag. 17.9356) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 3 May 2017.[12]
- SN 2024pxl (Type Iax[02cx-like], mag. 17.668) was discovered by the Zwicky Transient Facility on 23 July 2024.[13]
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