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NGC 4722

Coordinates: Sky map 12h 51m 32.3681s, −13° 19′ 47.993″
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NGC 4722
NGC 4722 imaged by Pan-STARRS
Observation data (J2000 epoch)
ConstellationCorvus
Right ascension12h 51m 32.3681s[1]
Declination−13° 19′ 47.993″[1]
Redshift0.004376[1]
Heliocentric radial velocity1312 ± 9 km/s[1]
Distance79.3 ± 5.7 Mly (24.30 ± 1.75 Mpc)[1]
Group or clusterNGC 4699 Group
Apparent magnitude (V)12.8[1]
Characteristics
TypeSB0/a(r)[1]
Size~59,200 ly (18.15 kpc) (estimated)[1]
Apparent size (V)1.8′ × 0.7′[1]
Other designations
IRAS 12488-1303, 2MASX J12513239-1319482, IC 3833, MCG -02-33-031, PGC 43560[1]

NGC 4722 is a lenticular galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background is 1647 ± 25 km/s, which corresponds to a Hubble distance of 79.3 ± 5.7 Mly (24.3 ± 1.75 Mpc).[1] In addition, two non-redshift measurements give a farther distance of 89.2 ± 39.3 Mly (27.35 ± 12.05 Mpc).[2] It was discovered by German astronomer Wilhelm Tempel in 1882.[3] It was also observed by French astronomer Guillaume Bigourdan on 15 April 1895 and listed in the Index Catalogue as IC 3833.[3]

NGC 4722 and NGC 4723 [fr] are listed together as Holm 471 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[4]

NGC 4699 group

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According to A.M. Garcia, NGC 4722 is part of NGC 4699 Group (also known as LGG 307), which contains at least 15 galaxies, including NGC 4699, NGC 4700, NGC 4742 [fr], NGC 4781, NGC 4790, NGC 4802 [fr], and NGC 4818.[5][6]

The NGC 4699 group is part of the Virgo II cluster, a cluster located at the southern boundary of the Virgo Cluster.[7] This cluster is part of the Virgo Supercluster.

Supernova

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One supernova has been observed in NGC 4722: SN 2024ablh (Type II, mag. 17.17) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 18 November 2024.[8]

See also

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References

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  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 4722". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 23 November 2024.
  2. ↑ "Distance Results for NGC 4722". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 23 November 2024.
  3. 1 2 Seligman, Courtney. "New General Catalogue Objects: NGC 4722". Celestial Atlas. Retrieved 23 November 2024.
  4. ↑ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.
  5. ↑ 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.
  6. ↑ "LGG 307". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 March 2026.
  7. ↑ Powell, Richard. "The Virgo II Groups". Atlas of the Universe. Retrieved 23 November 2024.
  8. ↑ "SN 2024ablh". Transient Name Server. IAU. Retrieved 23 November 2024.
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  • Wikimedia Commons logo Media related to NGC 4722 at Wikimedia Commons
  • NGC 4722 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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