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NGC 5061

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NGC 5061
NGC 5061 imaged by Pan-STARRS
Observation data (J2000 epoch)
ConstellationHydra
Right ascension13h 18m 05.1444s[1]
Declination−26° 50′ 14.149″[1]
Redshift0.006945±0.0000630[1]
Heliocentric radial velocity2,082±19 km/s[1]
Distance78.54 ± 3.36 Mly (24.080 ± 1.031 Mpc)[1]
Group or clusterNGC 5061 group (LGG 341)
Apparent magnitude (V)11.44[1]
Characteristics
TypeE0[1]
Size~178,100 ly (54.61 kpc) (estimated)[1]
Apparent size (V)3.5′ × 3.0′[1]
Other designations
ESO 508- G 038, MCG -04-31-048, PGC 46330[1]

NGC 5061 is an elliptical galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 2,383±28 km/s, which corresponds to a Hubble distance of 114.6 ± 8.2 Mly (35.14 ± 2.51 Mpc).[1] However, 25 non-redshift measurements give a closer mean distance of 78.54 ± 3.36 Mly (24.080 ± 1.031 Mpc).[2] It was discovered by German-British astronomer William Herschel on 28 March 1786.[3][4]

NGC 5061 is a Seyfert II 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]

NGC 5061 group

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NGC 5061 is a member of a group of galaxies that bears its name. The NGC 5061 group (also known as LGG 341) contains 10 galaxies, including NGC 5078, NGC 5085, NGC 5101, IC 874 [fr], IC 4222 [fr], IC 4231 [fr], and three galaxies from the ESO catalogue.[6]

Supernovae

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Two supernovae have been observed in NGC 5061:

  • SN 1996X (Type Ia, mag. 13) was discovered by Robert Evans and Kesao Takamizawa on 12 April 1996.[7][8] At magnitude 13, it was the brightest supernova of 1996.[9]
  • SN 2005cn (Type Ia, mag. 14.6) was discovered by the Brazilian Supernovae Search Team (BRASS) on 19 June 2005.[10][11]

See also

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References

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  1. ^ a b c d e f g h i j k "Results for object NGC 5061". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 13 August 2025.
  2. ^ "Distance Results for NGC 5061". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 13 August 2025.
  3. ^ Herschel, William (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London. 76: 457–499. Bibcode:1786RSPT...76..457H. doi:10.1098/rstl.1786.0027.
  4. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5061". Celestial Atlas. Retrieved 13 August 2025.
  5. ^ "NGC 5061". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 August 2025.
  6. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  7. ^ Garradd, G. J.; Nakano, S.; Evans, R. O.; Takamizawa, K.; Kushida, R.; Kushida, Y. (1996). "Supernova 1996X in NGC 5061". International Astronomical Union Circular (6380): 1. Bibcode:1996IAUC.6380....1G.
  8. ^ "SN 1996X". Transient Name Server. IAU. Retrieved 13 August 2025.
  9. ^ Bishop, David. "List of Supernovae in NGC and IC galaxies - 1996". Rochester Astronomy. Retrieved 13 August 2025.
  10. ^ Jacques, C.; Colesanti, C.; Pimentel, E.; Napoleao, T. (2005). "Supernova 2005cn in NGC 5061". International Astronomical Union Circular (8549): 1. Bibcode:2005IAUC.8549....1J.
  11. ^ "SN 2005cn". Transient Name Server. IAU. Retrieved 13 August 2025.
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  • Wikimedia Commons logo Media related to NGC 5061 at Wikimedia Commons
  • NGC 5061 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images