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NGC 424

Coordinates:Sky map01h 11m 27.6390s, −38° 05′ 00.452″
From Wikipedia, the free encyclopedia
Galaxy in the constellation of Sculptor
NGC 424
NGC 424
NGC 424 imaged by theHubble Space Telescope
Observation data (J2000epoch)
ConstellationSculptor
Right ascension01h 11m 27.6390s[1]
Declination−38° 05′ 00.452″[1]
Redshift0.011764[1]
Heliocentric radial velocity3,527 km/s[1]
Distance165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc)[1]
Apparent magnitude (V)12.9[2]
Characteristics
TypeSa[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 aspiral galaxy in the constellation ofSculptor. Its velocity with respect to thecosmic microwave background is3,303±18 km/s, which corresponds to aHubble distance of 158.9 ± 11.2 Mly (48.72 ± 3.42 Mpc).[1] Also, twonon-redshift measurements give a similar mean distance of 165.36 ± 24.14 Mly (50.700 ± 7.400 Mpc).[3] It was discovered by British astronomerJohn Herschel on November 30, 1837.[2][4]

NGC 424 is aSeyfert I galaxy, i.e. it has aquasar-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

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Onesupernova has been observed in NGC 424:SN 2025scw (Type II, mag. 16.924) was discovered byATLAS on 24 July 2025.[6]

Gallery

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See also

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References

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  1. ^abcdefgh"Results for Object NGC 0424".NASA/IPAC Extragalactic Database.NASA andCaltech. RetrievedMarch 18, 2017.
  2. ^abcd"New General Catalog Objects: NGC 400 - 449".Courtney Seligman. RetrievedMarch 18, 2017.
  3. ^"Distance Results for NGC 424".NASA/IPAC EXTRAGALACTIC DATABASE.NASA. Retrieved25 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. Retrieved25 July 2025.
  6. ^"SN 2025scw".Transient Name Server.IAU. Retrieved2 August 2025.

External links

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  • Media related toNGC 424 at Wikimedia Commons


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