NGC1233 (also listed as NGC 1235) is a spiral galaxy in the constellation of Perseus. Its velocity with respect to the cosmic microwave background is 4218 ± 14km/s, which corresponds to a Hubble distance of . In addition, three non redshift measurements give a distance of . The galaxy was discovered by French astronomer Édouard Stephan on 10 December 1871. It is also thought to have been observed by Lewis Swift on 21 October 1886, and later listed as NGC 1235.
Supernovae Three supernovae have been observed in NGC1233: SN2009lj (TypeIc, mag.19) was discovered by the Lick Observatory Supernova Search (LOSS) on 13 November 2009. SN2017lf (TypeIa, mag.17.3) was discovered by the Tsinghua-NAOC Transient Survey (TNTS) on 22 January 2017. SN2022bqi (TypeII, mag.17) was discovered by Giancarlo Cortini on 7 February 2022.
NGC 1207 Group NGC 1233 is a part of the 3 member NGC 1207 group (also known as LGG 83). The other two galaxies in the group are and .
See also List of NGC objects (1001–2000)
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