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NGC 7722 is a lenticular galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 3,639±26 km/s, which corresponds to a Hubble distance of 175.0 ± 12.3 Mly (53.67 ± 3.78 Mpc).[1] It was discovered by German astronomer Heinrich Louis d'Arrest on 12 August 1864.[2]
NGC 7722 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[3][4]
NGC 7711 group
[edit]NGC 7722 is part of the NGC 7711 group (also known as LGG 477). This galaxy group contains seven members, including NGC 7691, NGC 7711 [fr], UGC 12633 [d], UGC 12640 [d], UGC 12653 [d], and UGC 12673 [d].[5][6]
Supernova
[edit]One supernova has been observed in NGC 7722:
- SN 2020ssf (TypeIa, mag. 17.94) was discovered by the Zwicky Transient Facility on 6 September 2020.[7]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 7722". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 30 January 2026.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7722". Celestial Atlas. Retrieved 30 January 2026.
- ^ Toba, Y.; Oyabu, S.; Matsuhara, H.; Malkan, M. A.; Gandhi, P.; Nakagawa, T.; Isobe, N.; Shirahata, M.; Oi, N.; Ohyama, Y.; Takita, S.; Yamauchi, C.; Yano, K. (2014). "Luminosity and Redshift Dependence of the Covering Factor of Active Galactic Nuclei viewed with WISE and Sloan Digital Sky Survey". The Astrophysical Journal. 788 (1): 45. arXiv:1404.4937. Bibcode:2014ApJ...788...45T. doi:10.1088/0004-637X/788/1/45.
- ^ "NGC 7722". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 January 2026.
- ^ 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.
- ^ "LGG 477". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 January 2026.
- ^ "SN 2020ssf". Transient Name Server. IAU. Retrieved 30 January 2026.
External links
[edit]- 👁 Wikimedia Commons logo
Media related to NGC 7722 at Wikimedia Commons - NGC 7722 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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