| NGC 873 | |
|---|---|
| 👁 Image NGC 873 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 16m 32.3511s[1] |
| Declination | −11° 20′ 54.477″[1] |
| Redshift | 0.013403±0.0000140[1] |
| Heliocentric radial velocity | 4,018±4 km/s[1] |
| Distance | 181.7 ± 12.8 Mly (55.70 ± 3.91 Mpc)[1] |
| Group or cluster | NGC 835 Group (LGG 49) |
| Apparent magnitude (V) | 12.83[1] |
| Characteristics | |
| Type | Sc pec[1] |
| Size | ~86,300 ly (26.47 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 1.3′[1] |
| Other designations | |
| IRAS 02140-1134, 2MASX J02163235-1120549, MCG -02-06-048, PGC 8692[1] | |
NGC 873 is a peculiar spiral galaxy in the constellation of Cetus. Its velocity with respect to the cosmic microwave background is 3,777±17 km/s, which corresponds to a Hubble distance of 181.7 ± 12.8 Mly (55.70 ± 3.91 Mpc).[1] It was discovered by German-British astronomer William Herschel on 27 November 1785.[2][3]
NGC 873 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.[4][5]
NGC 835 group
[edit]NGC 873 is a member of the NGC 835 galaxy group (also known as LGG 49). The other galaxies in the group are NGC 833, NGC 835 [fr], NGC 838, NGC 839, NGC 848 [fr], and UGCA 23 [d].[6][7]
Supernova
[edit]One supernova has been observed in NGC 873:
- SN 2022xjk (TypeII, mag. 17.414) was discovered by the Zwicky Transient Facility on 12 October 2022.[8]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 873". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 16 December 2025.
- ^ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 79: 212–255. Bibcode:1789RSPT...79..212H. doi:10.1098/rstl.1789.0021.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 873". Celestial Atlas. Retrieved 16 December 2025.
- ^ 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.
- ^ "NGC 873". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 December 2025.
- ^ 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 49". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 December 2025.
- ^ "SN 2022xjk". Transient Name Server. IAU. Retrieved 16 December 2025.
External links
[edit]- 👁 Wikimedia Commons logo
Media related to NGC 873 at Wikimedia Commons - NGC 873 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
