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NGC 2446

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NGC 2446
NGC 2446 imaged by Pan-STARRS
Observation data (J2000 epoch)
ConstellationLynx
Right ascension07h 48m 39.2173s[1]
Declination+54° 36′ 42.570″[1]
Redshift0.018906±0.0000200[1]
Heliocentric radial velocity5,668±6 km/s[1]
Distance233.94 ± 7.66 Mly (71.725 ± 2.350 Mpc)[2]
Group or clusterLDC 537[3]
Apparent magnitude (V)13.73[1]
Characteristics
TypeSb[1]
Size~158,200 ly (48.51 kpc) (estimated)[1]
Apparent size (V)1.9′ × 1.0′[1]
Other designations
IRAS 07446+5444, 2MASX J07483926+5436430, UGC 4027, MCG +09-13-058, PGC 21860, CGCG 262-030[1]

NGC 2446 is a spiral galaxy in the constellation of Lynx. Its velocity with respect to the cosmic microwave background is 5,766±9 km/s, which corresponds to a Hubble distance of 277.4 ± 19.4 Mly (85.04 ± 5.96 Mpc).[1] However, eight non-redshift measurements give a closer mean distance of 233.94 ± 7.66 Mly (71.725 ± 2.350 Mpc).[2] It was discovered by British astronomer John Herschel on 10 February 1831.[4]

NGC 2446 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[5][6]

Galaxy group

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NGC 2446 is member of a small galaxy group known as LDC 537. The other three galaxies in the group are Z 262-54 [d], UGC 4035 [d], and Z 262-35 [d].[3][7]

Supernovae

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Two supernovae have been observed in NGC 2446:

See also

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References

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  1. ^ a b c d e f g h i j "Results for object NGC 2446". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 16 October 2026.
  2. ^ a b "Distance Results for NGC 2446". NASA/IPAC Extragalactic Database. NASA. Retrieved 16 October 2026.
  3. ^ a b Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201.
  4. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 2446". Celestial Atlas. Retrieved 16 October 2026.
  5. ^ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (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. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  6. ^ "NGC 2446". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 October 2026.
  7. ^ "[CHM2007] LDC 537". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 October 2026.
  8. ^ Xu, Zhijian; Gao, Xing; Brimacombe, J.; Luppi, Federica; Buzzi, Luca; Masi, Gianluca; Nocentini, Francesca; Schmeer, Patrick; Martignoni, Massimiliano; Terreran, G.; Tomasella, L.; Benetti, S.; Cappellaro, E.; Elias-Rosa, N.; Ochner, P.; Pastorello, A.; Turatto, M. (2014). "Supernova 2014ak in NGC 2446 = PSN J07484410+5436405". Central Bureau Electronic Telegrams (3845): 1. Bibcode:2014CBET.3845....1X.
  9. ^ Terreran, G.; Tomasella, L.; Benetti, S.; Cappellaro, E.; Elias-Rosa, N.; Ochner, P.; Pastorello, A.; Turatto, M. (2014). "Asiago classification of PSN J07484410+5436405 as a young Type-Ia SN". The Astronomer's Telegram (6028): 1. Bibcode:2014ATel.6028....1T.
  10. ^ "SN 2014ak". Transient Name Server. IAU. Retrieved 16 October 2026.
  11. ^ "SN 2026aesj". Transient Name Server. IAU. Retrieved 16 October 2026.

Notes

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  • Wikimedia Commons logo Media related to NGC 2446 at Wikimedia Commons
  • NGC 2446 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images