NGC 424

NGC 424
NGC 424
NGC 424 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationSculptor
Right ascension01h 11m 27.6390s
Declination−38° 05′ 00.452″
Redshift0.011764
Heliocentric radial velocity3,527 km/s
Distance165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc)
Apparent magnitude (V)12.9
Characteristics
TypeSa
Size~134,600 ly (41.26 kpc) (estimated)
Apparent size (V)2.3′ × 0.8′
Other designations
ESO 296- G 004, IRAS 01091-3820, MCG -06-03-026, PGC 4274

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). Also, two non-redshift measurements give a similar mean distance of 165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc). It was discovered by British astronomer John Herschel on November 30, 1837.

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. Other sources state NGC 424 to be a Seyfert II galaxy.

Supernova

One supernova has been observed in NGC 424: SN 2025scw (Type II, mag. 16.924) was discovered by ATLAS on 24 July 2025.

See also

References

  1. 1 2 3 4 5 6 7 8 "Results for Object NGC 0424". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved March 18, 2017.
  2. 1 2 3 4 "New General Catalog Objects: NGC 400 - 449". Courtney Seligman. Retrieved March 18, 2017.
  3. ↑ "Distance Results for NGC 424". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 25 July 2025.
  4. ↑ 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.
  5. ↑ "NGC 424". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 July 2025.
  6. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; et al. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 Mpc". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784–1816. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  7. ↑ "SN 2025scw". Transient Name Server. IAU. Retrieved 2 August 2025.