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IC 2233

Coordinates: Sky map 08h 13m 58.77s, +45° 44′ 41.9″
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IC 2233
The spiral galaxy IC 2233 is one of the flattest galaxies known.
Observation data (J2000 epoch)
Right ascension08h 13m 58.77s[1]
Declination+45° 44′ 41.9″[1]
Heliocentric radial velocity559 km/s[1]
Distance40 million light-years[2]
Apparent magnitude (V)12.63[1]
TypeSd D[1]
Other designations
2MASX J08135890+4544317, SDSS J081358.76+454441.8, Z 236-36, FGC 730, 2MASXI J0813589+454434, SHOC 192, Z 0810.4+4554, IRAS F08104+4553, MCG+08-15-052, TC 702, [M98c] 081027.6+455350, LCSB L334, 2MFGC 6519, UGC 4278, LEDA 23071, RFGC 1340, UZC J081358.9+454434

IC 2233, also known as UGC 4278, is a spiral galaxy lying in the constellation of Lynx. IC 2233 is located between 26 and 40 million light-years away from Earth. A comparatively quiet galaxy with a low rate of star formation (less than one solar mass every twenty years), it was long thought to be possibly interacting with the Bear's Paw galaxy. However, this is now considered highly unlikely as radio observations with the Very Large Array showed the two galaxies lie at different distances.[3] This galaxy was discovered by British astronomer Isaac Roberts in 1894.



  1. ^ a b c d e f "SIMBAD basic query result". Astronomical Database. SIMBAD. Retrieved 13 February 2013.
  2. ^ "The Needle Galaxy". ESA/Hubble Picture of the Week. Retrieved 13 February 2013.
  3. ^ Matthews, Lynn D.; Uson, Juan M. (2008). "H I Imaging Observations of Superthin Galaxies. II. IC 2233 and the Blue Compact Dwarf NGC 2537". The Astronomical Journal. 135 (1): 291–318. arXiv:0709.4249. Bibcode:2008AJ....135..291M. doi:10.1088/0004-6256/135/1/291. S2CID 15329889.
  4. ^ "Portrait of a Needle Galaxy". noirlab.edu. Retrieved 6 January 2021.