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NGC 4441

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NGC 4441
NGC 4441 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationDraco
Right ascension12h 27m 20.3315s[1]
Declination+64° 48′ 06.253″[1]
Redshift0.009080±0.00000300[1]
Heliocentric radial velocity2,722±1 km/s[1]
Distance62.46 ± 0.49 Mly (19.150 ± 0.150 Mpc)[1]
Apparent magnitude (V)13.5g[1]
Characteristics
TypeSAB0+ pec[1]
Size~81,800 ly (25.07 kpc) (estimated)[1]
Apparent size (V)1.47′ × 0.93′[1]
Other designations
IRAS 12250+6504, 2MASS J12272032+6448064, UGC 7572, MCG +11-15-056, PGC 40836, CGCG 315-039[1]

NGC 4441 is a peculiar lenticular galaxy in the constellation of Draco. Its velocity with respect to the cosmic microwave background is 2,830±8 km/s, which corresponds to a Hubble distance of 136.1 ± 9.5 Mly (41.74 ± 2.92 Mpc).[1] However, two non-redshift measurements give a much closer mean distance of 62.46 ± 0.49 Mly (19.150 ± 0.150 Mpc).[2] It was discovered by German-British astronomer William Herschel on 20 March 1790.[3]

NGC 4125 group

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According to Abraham Mahtessian, NGC 4441 is part of the NGC 4125 group, which has at least 12 members. The other galaxies in this group are NGC 3796 [fr], NGC 3945, NGC 4036, NGC 4041, NGC 4081 [fr], NGC 4125, NGC 4205 [fr], NGC 4391 [fr], IC 758, UGC 7009 [d], and UGC 7020A [d].[4]

Supernovae

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Two supernovae have been observed in NGC 4441:

  • SN 2019yvq (Type Ia, mag. 16.7) was discovered by Kōichi Itagaki on 28 December 2019.[5] It was originally classified as a Type Ib/c, but later analysis concluded it to be a peculiar Type Ia, similar to SN 2002es.[6] It was extremely bright in the ultraviolet but otherwise underluminous, and was relatively quickly declining in its brightness.[6]
  • SN 2025aecv (Type II, mag. 17.589) was discovered by ATLAS on 18 November 2025.[7]

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 4441". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 24 November 2025.
  2. ^ "Distance Results for NGC 4441". NASA/IPAC Extragalactic Database. NASA. Retrieved 24 November 2025.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 4441". Celestial Atlas. Retrieved 24 November 2025.
  4. ^ Mahtessian, A. P. (1998). "Groups of galaxies. III. Some empirical characteristics". Astrophysics. 41 (3): 308–321. Bibcode:1998Ap.....41..308M. doi:10.1007/BF03036100.
  5. ^ "SN 2019yvq". Transient Name Server. IAU. Retrieved 24 November 2025.
  6. ^ a b Burke, J.; Howell, D. A.; Sarbadhicary, S. K.; Sand, D. J.; Amaro, R. C.; Hiramatsu, D.; McCully, C.; Pellegrino, C.; Andrews, J. E.; Brown, P. J.; Itagaki, K.; Shahbandeh, M.; Bostroem, K. A.; Chomiuk, L.; Hsiao, E. Y.; Smith, N.; Valenti, S. (October 2021). "A Bright Ultraviolet Excess in the Transitional 02es-like Type Ia Supernova 2019yvq". The Astrophysical Journal. 919 (1): 142. arXiv:2101.06345. Bibcode:2021ApJ...919..142B. doi:10.3847/1538-4357/ac126b.
  7. ^ "SN 2025aecv". Transient Name Server. IAU. Retrieved 24 November 2025.
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  • Wikimedia Commons logo Media related to NGC 4441 at Wikimedia Commons
  • NGC 4441 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images