| Epoch | J2000 |
|---|---|
| Ra | [1] |
| Dec | [1] |
| Dist ly | 18.96 ± 1.33 Mpc Mly[1] |
| Z | 0.004657[1] |
| Appmag v | 10.63[1] |
| Size v | 7.1′ × 5.4′[1] |
| Size | ~291,900 ly (89.51 kpc) (estimated)[1] |
| Constellation name | Fornax |
| Names | [1] |
NGC 1398 is an isolated barred spiral galaxy exhibiting a double ring structure. It is located 65 million light years from the Earth, in the constellation of Fornax.[2][3] The galaxy, with a diameter of approximately 292,000 light years, is bigger than the Milky Way. Over 100 billion stars are in the galaxy.[4] The discovery credit for NGC 1398 is often given to Friedrich Winnecke of Karlsruhe, Germany, who observed it on 17 December 1868, while he was searching for comets.[5] German astronomer Wilhelm Tempel had first observed it on 9 October 1861, but he did not publish his observation until 1882.[6]
Supernovae
Two supernovae have been observed in NGC 1398:
- SN 1996N (Type Ib/c, mag. 16) was discovered by the Perth Astronomical Research Group on 12 March 1996.[7][8]
- SN 2025zi (Type Iax [02cx-like], mag. 20.07) was discovered by BlackGEM on 21 January 2025.[9]
See also
References
- ^ "NED results for object NGC 1398". NASA/IPAC Extragalactic Database. Retrieved 17 February 2015.
- ^ "NGC 1398". noao.edu. Archived from the original on 9 August 2014. Retrieved 17 February 2015.
- ^ Moore, E. M. & Gottesman, S. T. (1 July 1995). "The Barred Spiral Galaxy NGC 1398 and Its Pattern Speed". The Astrophysical Journal. 447: 159. Bibcode:1995ApJ...447..159M. doi:10.1086/175862. Retrieved 17 February 2015.
- ^ "Dark Energy Survey kicks off second season cataloging the wonders of deep space". fnal.gov. 18 August 2014. Retrieved 17 February 2015.
- ^ Stephen James O'Meara (12 April 2007). Deep-Sky Companions: Hidden Treasures. Cambridge University Press. p. 110. ISBN 978-1-139-46373-7.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 1398". Celestial Atlas. Retrieved 31 July 2025.
- ^ Williams, A.; Martin, R.; Germany, L.; Schmidt, B.; Stathakis, R.; Johnston, H. (1996). "Supernova 1996N in NGC 1398". International Astronomical Union Circular. ' (6351): 1. Bibcode:1996IAUC.6351....1W
- ^ "SN 1996N". Transient Name Server. IAU. Retrieved 10 December 2024.
- ^ "SN 2025zi". Transient Name Server. IAU. Retrieved 23 January 2025.