Astronomy: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] |
| Helio 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
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
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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
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "Results for Object NGC 0424". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+0424.
- ↑ 2.0 2.1 2.2 2.3 "New General Catalog Objects: NGC 400 - 449". Courtney Seligman. http://cseligman.com/text/atlas/ngc4.htm#424.
- ↑ "Distance Results for NGC 424". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+424.
- ↑ Herschel, J. F. W (1864). "Catalogue of Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London 154: 1–137. doi:10.1098/rstl.1864.0001. Bibcode: 1864RSPT..154....1H.
- ↑ "NGC 424". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+424.
- ↑ "SN 2025scw". IAU. https://www.wis-tns.org/object/2025scw.
External links
Coordinates: 
01h 11m 27.6390s, −38° 05′ 00.452″
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