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NGC 3904
Observation data (J2000.0 epoch)
ConstellationHydra[1]
Right ascension11h 49m 13,2s[1][2]
Declination−29° 16′ 36″[2]
Redshift0.005257[3]
Heliocentric radial velocity1576 ± 8[2]
Distance72 million LY[3]
Apparent magnitude (V)10.96[1][4]
Characteristics
TypeE2[5]
Apparent size (V)2.70 x 2.0[6][3]
Other designations
PGC 36918

NGC 3904 is an elliptical galaxy in the constellation Hydra.[1] It was observed both by astronomers William Herschel in 1791 and John Herschel in 1834, respectively.[7] The galaxy's radial velocity, relative to the cosmic microwave background is measured at around 1915 ± 25 km/s, corresponding to a Hubble distance of around 28.25 ± 2.02 MPC.[2]

Characteristics

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NGC 3904 exhibits no detectable neutral hydrogen or radio emissions, indicating a lack of ongoing star formation. It also hosts a system of globular clusters with relatively lower metallicity and bluer colors than those in bigger elliptical galaxies.[8]

Supernova

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One supernova has been observed within the galaxy NGC 3904:

  • SN 1971C (type unknown, mag. 15.3) was discovered by Glenn Jolly on January 31st, 1971.[9][10][11]

See also

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References

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  1. ^ a b c d "NGC 3904 - Elliptical Galaxy in Hydra | TheSkyLive". theskylive.com.
  2. ^ a b c d "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu.
  3. ^ a b c "NGC 3904 - elliptical galaxy. Description NGC 3904:". kosmoved.ru.
  4. ^ "DOCdb - NGC 3904". www.docdb.net.
  5. ^ "Revised Shapley-Ames Catalog of Bright Galaxies". ned.ipac.caltech.edu.
  6. ^ "Revised NGC Data for NGC 3904". spider.seds.org.
  7. ^ "New General Catalog Objects: NGC 3900 - 3949". cseligman.com.
  8. ^ "1993ESOC...45..531H Page 531". articles.adsabs.harvard.edu.
  9. ^ Dunlap, J. R.; Jolly (3 February 1971). Marsden, Brian G. (ed.). "SUPERNOVA OR NOVA NGC 3904?". Central Bureau for Astronomical Telegrams. 2305. IAU: 1. Retrieved 24 December 2025.
  10. ^ "List of Supernovae". lweb.cfa.harvard.edu.
  11. ^ "1971C | Transient Name Server". www.wis-tns.org.
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