NGC 424
| NGC 424 | |
|---|---|
 NGC 424 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Sculptor |
| Right ascension | 01h 11m 27.6390s[1] |
| Declination | −38° 05′ 00.452″[1] |
| Redshift | 0.011764[1] |
| Heliocentric radial velocity | 3,527 km/s[1] |
| Distance | 165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc)[1] |
| Apparent magnitude (V) | 12.9[2] |
| Characteristics | |
| Type | Sa[2] |
| Size | ~134,600 ly (41.26 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 0.8′[2] |
| Other designations | |
| ESO 296- G 004, IRAS 01091-3820, MCG -06-03-026, PGC 4274[1] | |
NGC 424 is a spiral galaxy in the constellation of Sculptor. Its velocity with respect to the cosmic microwave background is 3,303±18 km/s, which corresponds to a Hubble distance of 158.9 ± 11.2 Mly (48.72 ± 3.42 Mpc).[1] Also, two non-redshift measurements give a similar mean distance of 165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc).[3] It was discovered by British astronomer John Herschel on November 30, 1837.[2][4]
NGC 424 is a Seyfert I galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[5]
Supernova
[edit]One supernova has been observed in NGC 424: SN 2025scw (Type II, mag. 16.924) was discovered by ATLAS on 24 July 2025.[6]
Gallery
[edit]-
NGC 424 imaged by 2MASS -
NGC 424 imaged by DSS -
NGC 424 imaged by legacy surveys, showing that this galaxy has a tidal structure
See also
[edit]References
[edit]- ^ a b c d e f g h "Results for Object NGC 0424". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved March 18, 2017.
- ^ a b c d "New General Catalog Objects: NGC 400 - 449". Courtney Seligman. Retrieved March 18, 2017.
- ^ "Distance Results for NGC 424". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 25 July 2025.
- ^ Herschel, J. F. W (1864). "Catalogue of Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London. 154: 1–137. Bibcode:1864RSPT..154....1H. doi:10.1098/rstl.1864.0001.
- ^ "NGC 424". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 July 2025.
- ^ "SN 2025scw". Transient Name Server. IAU. Retrieved 2 August 2025.
External links
[edit]
Media related to NGC 424 at Wikimedia Commons
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