NGC 6384

NGC 6384
NGC 6384 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationOphiuchus
Right ascension17h 32m 24.302s[1]
Declination+07° 03′ 36.97″[1]
Redshift0.005554[2]
Heliocentric radial velocity1,665 km/s[3]
Distance76.6 Mly (23.5 Mpc)[3]
Characteristics
TypeSAB(r)bc[4]
Mass1.05 × 1011[4] M☉
Size138,000 light years
Other designations
IRAS 17299+0705, 2MASX J17322430+0703369, UGC 10891, MCG +01-45-001, PGC 60459, CGCG 055-007

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 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]

  1. ^ a b Cite error: The named reference ApJ131_1163 was invoked but never defined (see the help page).
  2. ^ "NASA/IPAC Extragalactic Database". Results for NGC 6384. Retrieved 21 August 2024.
  3. ^ a b Cite error: The named reference MNRAS413_2_813 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference ApJ696_1_411 was invoked but never defined (see the help page).
  5. ^ Seligman, Courtney. "NGC 6384". Celestial Atlas. Retrieved 21 August 2024.
  6. ^ Cite error: The named reference Buta2007 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference AP50_4_426 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference MNRAS350_3_1087 was invoked but never defined (see the help page).