NGC 7454 is an elliptical galaxy in the constellation Pegasus. It was discovered on October 15, 1784 by William Herschel.[5] This object has an apparent visual magnitude of 11.8, a visual size of 2.1′ × 1.4′,[1] and a morphological classification of E4.[1] J. L. E. Dreyer described the galaxy as F, cS, lE, lbM, *11 p 1', which indicates it is faint, considerably small, a little extended, with a little brighter middle, and an 11th magnitude star is located 1 arcmin to west.[6]

References

  1. ^ a b c d e f Aranda, Ted (2011). 3,000 Deep-Sky Objects, An Annotated Catalogue. Springer New York. p. 473. ISBN 9781441994196.
  2. ^ a b Gaia Collaboration (2020-11-01). "VizieR Online Data Catalog: Gaia EDR3 (Gaia Collaboration, 2020)". VizieR Online Data Catalog: I/350. Bibcode:2020yCat.1350....0G. doi:10.26093/cds/vizier.1350.
  3. ^ a b Tully, R. Brent; et al. (October 2013). "Cosmicflows-2: The Data". The Astronomical Journal. 146 (4): 25. arXiv:1307.7213. Bibcode:2013AJ....146...86T. doi:10.1088/0004-6256/146/4/86. S2CID 118494842. 86.
  4. ^ "NGC 7454". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-10-26.
  5. ^ Seligman, Courtney. "Celestial Atlas". cseligman.com. Retrieved 2022-12-12.
  6. ^ Frommert, Hartmut. "NGC 7454". SEDS. Retrieved 2022-12-12.
  • Media related to NGC 7454 at Wikimedia Commons


Allikas: https://en.wikipedia.org/wiki/NGC_7454
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