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 202.9 ± 14.2 Mly (62.22 ± 4.36 Mpc).[1] In addition, three non redshift measurements give a distance of 211.35 ± 2.14 Mly (64.800 ± 0.656 Mpc).[2] The galaxy was discovered by French astronomer Édouard Stephan on 10 December 1871.[3] It is also thought to have been observed by Lewis Swift on 21 October 1886, and later listed as NGC 1235.[4]
^Seligman, Courtney. "NGC1233". Celestial Atlas. Retrieved 24 August 2024.
^Seligman, Courtney. "NGC1235". Celestial Atlas. Retrieved 24 August 2024.
^"SN2009lj". Transient Name Server. IAU. Retrieved 24 August 2024.
^"SN2000dj". Transient Name Server. IAU. Retrieved 24 August 2024.
^"SN2022bqi". Transient Name Server. IAU. Retrieved 24 August 2024.
^Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.