NGC 6794

NGC 6794
NGC 6794 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationSagittarius
Right ascension19h 28m 03.8849s
Declination−38° 55′ 07.297″
Redshift0.020077±0.0000300
Heliocentric radial velocity6,019±9 km/s
Distance315.94 ± 1.96 Mly (96.867 ± 0.601 Mpc)
Group or clusterLDC 1344
Apparent magnitude (V)13.9
Characteristics
TypeSA(rs)ab
Size~229,700 ly (70.44 kpc) (estimated)
Apparent size (V)1.7′ × 1.5′
Other designations
ESO 338- G 005, 2MASX J19280388-3855077, MCG -07-40-001, PGC 63241

NGC 6794 is a large spiral galaxy in the constellation of Sagittarius. Its velocity with respect to the cosmic microwave background is 5,887±13 km/s, which corresponds to a Hubble distance of 283.2 ± 19.8 Mly (86.83 ± 6.08 Mpc). However, three non-redshift measurements give a farther mean distance of 315.94 ± 1.96 Mly (96.867 ± 0.601 Mpc). It was discovered by British astronomer John Herschel on 24 August 1834.

NGC 6794 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

NGC 6794 viewed through visible light

Galaxy group

NGC 6794 is a member of a small galaxy group known as LDC 1344, which includes the galaxies ESO 338-7 [d] and ESO 338-9 [d].

Supernova

One supernova has been observed in NGC 6794:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 6794". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 19 January 2026.
  2. ↑ "Distance Results for NGC 6794". NASA/IPAC Extragalactic Database. NASA. Retrieved 19 January 2026.
  3. ↑ Herschel, J. F. W (1864). "Catalogue of Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London. 154: 1–137. Bibcode:1864RSPT..154....1H. doi:10.1098/rstl.1864.0001.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 6794". Celestial Atlas. Retrieved 19 January 2026.
  5. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  6. ↑ "NGC 6794". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 January 2026.
  7. ↑ "[CHM2007] LDC 1344". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 January 2026.
  8. ↑ Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201.
  9. ↑ "SN 2024dgn". Transient Name Server. IAU. Retrieved 19 January 2026.