NGC 5493 is a peculiar lenticular galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,929±19 km/s, which corresponds to a Hubble distance of 140.9 ± 9.9 Mly (43.20 ± 3.04 Mpc).[1] However, three non-redshift measurements give a much closer mean distance of 64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc).[2] It was discovered by German-British astronomer William Herschel on 22 February 1787.[3][4]
| NGC 5493 | |
|---|---|
 NGC 5493 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 14h 11m 29.3824s[1] |
| Declination | −05° 02′ 37.090″[1] |
| Redshift | 0.008889±0.0000170[1] |
| Heliocentric radial velocity | 2,665±5 km/s[1] |
| Distance | 64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc)[1] |
| Group or cluster | NGC 5427 group (LGG 374) |
| Apparent magnitude (V) | 12.27[1] |
| Characteristics | |
| Type | S0 pec edge-on[1] |
| Size | ~41,100 ly (12.60 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 1.3′[1] |
| Other designations | |
| 2MASX J14112938-0502371, UGCA 386, MCG -01-36-013, PGC 50670[1] | |
NGC 5493 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]
NGC 5427 group
editSupernova
editOne supernova has been observed in NGC 5493:
- SN 1990M (Type Ia, mag. 13.5) was discovered by Robert Evans on 15 June 1990.[9][10]
See also
editReferences
edit- 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 5493". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 13 December 2025.
- ↑ "Distance Results for NGC 5493". NASA/IPAC Extragalactic Database. NASA. Retrieved 13 December 2025.
- ↑ Herschel, W. (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 5493". Celestial Atlas. Retrieved 13 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 5493". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 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 374". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 December 2025.
- ↑ Evans, R.; Cragg, T. (1990). "Supernova 1990M in NGC 5493". International Astronomical Union Circular (5033): 1. Bibcode:1990IAUC.5033....1E.
- ↑ "SN 1990M". Transient Name Server. IAU. Retrieved 13 December 2025.
External links
edit- NGC 5493 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images