IC 5201

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IC 5201
IC 5201 - HST - Potw1650a.tif
Observation data (J2000 epoch)
Right ascension 22h 20m 57.4s[2]
Declination−46° 02′ 09″[2]
Redshift0.003052 ± 0.000007 [2]
Helio radial velocity915 ± 2 km/s[2]
Distance36.4 ± 17.6 Mly (11.2 ± 5.4 Mpc)[2]
Apparent magnitude (V)10.8 [3]
TypeSB(s)cd [2]
Apparent size (V)8′.5 × 3′.9 [2]
Other designations
ESO 289-G018, PGC 68618[2]
See also: Galaxy, List of galaxies

IC 5201 is a barred spiral galaxy located in the constellation Grus. It is located at a distance of circa 35 million light years from Earth, which, given its apparent dimensions, means that IC 5201 is about 90,000 light years across, it was discovered by Joseph Lunt in 1900.[4]

IC 5201 is characterised by its bright bar, that measures 0.6 × 0.16 arcminutes.[5] The galaxy has multiple thin arms which contain a large number of HII regions, where new stars are born; the largest of these regions have diameter about 5 arcseconds.[6] The galaxy has been found to have HII region activity in its nucleus;[7] the total star formation rate of the galaxy is estimated to be 1.7 M per year.[8] The galaxy is close enough so as its stars can be resolved; the brightest of them have apparent magnitude about 21.5.[6] One ultra-luminous X-ray source has been detected in the galaxy.[9]

One supernova has been observed in IC 5201, SN 1978G, it was first reported by J. C. Blades, of the Anglo-Australian Observatory, and R. E. Griffiths, of Center for Astrophysics, on November 24.5 UTC, with apparent magnitude at discovery 13.5. The supernova was detected in its early stages. Spectroscopic observations revealed it was a type II supernova, it was located 1'.6 west and 0'.7 north of the nucleus.[10]

IC 5201 is characterised as an isolated galaxy.[11] Despite the fact IC 5201 doesn't belong to a galaxy group, it is the largest galaxy in an area of the universe where lie other galaxies too, like NGC 7462.[12]


  1. ^ "A closer look at IC 5201". www.spacetelescope.org. 12 December 2016.
  2. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for IC 5201. Retrieved 2019-01-18.
  3. ^ "Revised IC Data for IC 5201". spider.seds.org. Retrieved 25 November 2018.
  4. ^ Seligman, Courtney. "IC 5201 (= PGC 68618)". Celestial Atlas. Retrieved 19 November 2018.
  5. ^ de Vaucouleurs, Gerard Henri; de Vaucouleurs, Antoinette; Shapley, Harlow (1964). Reference catalogue of bright galaxies. Austin: University of Texas Press. Bibcode:1964rcbg.book.....D.
  6. ^ a b Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  7. ^ Phillips, M. M.; Charles, P. A.; Baldwin, J. A. (March 1983). "Nearby galaxies with Seyfert-like nuclei". The Astrophysical Journal. 266: 485. doi:10.1086/160797.
  8. ^ Ryder, Stuart D.; Dopita, Michael A. (July 1994). "The relationship between past and present star formation in galactic disks from CCD surface photometry". The Astrophysical Journal. 430: 142. doi:10.1086/174389.
  9. ^ Mapelli, M.; Ripamonti, E.; Zampieri, L.; Colpi, M.; Bressan, A. (17 September 2010). "Ultra-luminous X-ray sources and remnants of massive metal-poor stars". Monthly Notices of the Royal Astronomical Society. 408 (1): 234–253. doi:10.1111/j.1365-2966.2010.17048.x.
  10. ^ "IAUC 3309: SN IN IC 5201; HEAO 2; H 2155-304". Central Bureau for Astronomical Telegrams. International Astronomical Union. 29 November 1978.
  11. ^ Karachentsev, I. D.; Makarov, D. I.; Karachentseva, V. E.; Melnyk, O. V. (20 March 2011). "Catalog of nearby isolated galaxies in the volume z < 0.01". Astrophysical Bulletin. 66 (1): 1–27. arXiv:1103.3990. doi:10.1134/S1990341311010019.
  12. ^ Karachentsev, Igor D.; Kaisina, Elena I.; Makarov, Dmitry I. (3 December 2013). "Suites of Dwarfs around nearby Giant Galaxies". The Astronomical Journal. 147 (1): 13. doi:10.1088/0004-6256/147/1/13.

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