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NGC 84

From Wikipedia, the free encyclopedia
NGC 84

NGC 84
Credit: SDSS
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Andromeda[1]
Right ascension 00h 21m 21.2s[2]
Declination +22° 37′ 11″[2]
Apparent magnitude (V) 15.3[3]

NGC 84 is a star located in the constellation Andromeda.[4] NGC 84 is often misidentified in astronomical literature as a galaxy rather than a single star.[4] It was first discovered on November 14, 1884, by the French astronomer Guillaume Bigourdan, who is well known for his successes in cataloging faint celestial forms.[5]

NGC stands for the New General Catalogue, a listing of deep space objects like star clusters, nebulae, and galaxies. The NGC includes over 7,800 objects and remains one of the most commonly used astronomical catalogs today.[6]

NGC 84 is located at a right ascension of 00h 21m 21.25s and a declination of +22° 37′ 10.90″.[7] Due to its extreme faintness, it is not visible to the naked eye and requires a telescope for observation.[7]

Located near the celestial equator, NGC 84 can be observed from both the Northern and Southern Hemispheres during certain times of the year.[8] This location offers an opportunity for astronomers to study it, though its low brightness and distant location make it extremely challenging to observe.[7]

References

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  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. 1 2 "NED results for object NGC 0084". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 7 June 2017.
  3. ↑ Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; Monet, D. G.; Zacharias, M. I. (2012). "VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)". Vizier Online Data Catalog. Bibcode:2012yCat.1322....0Z.
  4. 1 2 Astronomy, Go. "NGC 84 | star in Andromeda | New General Catalogue". Go-Astronomy.com. Retrieved 2025-04-22.
  5. ↑ Beall, Abigail (December 2019). "Stargazing at home 2: See the Andromeda galaxy". New Scientist. 244 (3260): 51. doi:10.1016/S0262-4079(19)32380-2.
  6. ↑ Brasch, Klaus R. (2024-09-01). "Get to know the Andromeda Galaxy". Astronomy Magazine. Retrieved 2025-04-22.
  7. 1 2 3 Ford, Dominic (2014), The Deep Sky, The Patrick Moore Practical Astronomy Series, New York, NY: Springer New York, pp. 199–204, doi:10.1007/978-1-4939-0629-1_9, ISBN 978-1-4939-0628-4, retrieved 2025-04-22
  8. ↑ Sohn, Rebecca; Tillman, Nola Taylor (2018-01-10). "The Andromeda Galaxy (M31): Location, Characteristics & Images". Space. Retrieved 2025-04-22.
[edit]
  • Wikimedia Commons logo Media related to NGC 84 at Wikimedia Commons


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