NGC 84

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NGC 84
NGC 0084 SDSS.jpg
NGC 84
Credit: SDSS
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Andromeda [1]
Right ascension 00h 21m 21.2s [2]
Declination +22° 37′ 11″ [2]

NGC 84 is a star located in the constellation Andromeda. [3] NGC 84 is often misidentified in astronomical literature as a galaxy rather than a single star. [3] 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. [4]

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. [5]

NGC 84 is located at a right ascension of 00h 21m 21.25s and a declination of +22° 37′ 10.90″. [6] Due to its extreme faintness, it is not visible to the naked eye and requires a telescope for observation. [6] Located near the celestial equator NGC 84 can be observed from both the Northern and Southern Hemispheres during certain times of the year. [7] This location offers an opportunity for astronomers to study it. Though its low brightness and distant location make it extremely challenging to observe. [6]


  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. 1 2 Astronomy, Go. "NGC 84 | star in Andromeda | New General Catalogue". Go-Astronomy.com. Retrieved 2025-04-22.
  4. ↑ 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.
  5. ↑ Brasch, Klaus R. (2024-09-01). "Get to know the Andromeda Galaxy". Astronomy Magazine. Retrieved 2025-04-22.
  6. 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
  7. ↑ Sohn, Rebecca; updated, Nola Taylor Tillman last (2018-01-10). "The Andromeda Galaxy (M31): Location, Characteristics & Images". Space. Retrieved 2025-04-22.


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