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| NGC 1398 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Fornax |
| Right ascension | 03h 38m 52.0633s[1] |
| Declination | −26° 20′ 15.583″[1] |
| Redshift | 0.004657[1] |
| Distance | 61.8 ± 4.3 Mly (18.96 ± 1.33 Mpc)[1] |
| Apparent magnitude (V) | 10.63[1] |
| Characteristics | |
| Type | (R')SB(r)ab[1] |
| Size | ~291,900 ly (89.51 kpc) (estimated)[1] |
| Apparent size (V) | 7.1′ × 5.4′[1] |
| Other designations | |
| ESO 482-22, IRAS 03367-2629, MCG -04-09-040, PGC 13434[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 135,000 light years, is bigger than the Milky Way. Over 100 billion stars are in the galaxy.[4] It was first discovered by Friedrich Winnecke of Karlsruhe, Germany, on 17 December 1868, while he was searching for comets.[5]
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.[6][7]
- SN 2025zi (type Iax [02cx-like], mag. 20.07) was discovered by BlackGEM on 21 January 2025.[8]
- ^ a b c d e f g h i "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.
- ^ 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.