Wiki Article
NGC 5480
Nguồn dữ liệu từ Wikipedia, hiển thị bởi DefZone.Net
| NGC 5480 | |
|---|---|
 NGC 5480 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 14h 06m 21.5880s[1] |
| Declination | +50° 43′ 30.232″[1] |
| Redshift | 0.006373±0.000006[1] |
| Heliocentric radial velocity | 1,911±2 km/s[1] |
| Distance | 77.45 ± 5.01 Mly (23.747 ± 1.536 Mpc)[1] |
| Group or cluster | NGC 5448 Group (LGG 372) |
| Apparent magnitude (V) | 12.8g[1] |
| Characteristics | |
| Type | SA(s)c[1] |
| Size | ~50,500 ly (15.47 kpc) (estimated)[1] |
| Apparent size (V) | 1.63′ × 1.22′[1] |
| Other designations | |
| HOLM 588A, IRAS 14045+5057, UGC 9026, MCG +09-23-035, PGC 50312, CGCG 272-027[1] | |
NGC 5480 is a spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 2,045±10 km/s, which corresponds to a Hubble distance of 98.4 ± 6.9 Mly (30.16 ± 2.12 Mpc).[1] However, 15 non-redshift measurements give a closer mean distance of 77.45 ± 5.01 Mly (23.747 ± 1.536 Mpc).[2] It was discovered by German-British astronomer William Herschel on 15 May 1787.[3][4]
NGC 5480 is listed as having an active galactic nucleus.[5]
NGC 5448 group
[edit]According to A. M. Garcia, the galaxy NGC 5480 is a member of the NGC 5448 group (also known as LGG 372). This galaxy group has at least nine members, including NGC 5425, NGC 5448, NGC 5477, NGC 5481, NGC 5500, NGC 5520, UGC 9056, and UGC 9083.[6][7]
NGC 5480 and neighboring galaxy NGC 5481 are listed together as Holm 588 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[8]
Supernovae
[edit]Two supernovae have been observed in NGC 5480:
- SN 1988L (Type Ib, mag. 16.5) was discovered by Saul Perlmutter and Carlton R. Pennypacker on 30 April 1988.[9][10]
- SN 2017iro (Type Ib, mag. 15.5) was discovered by Patrick Wiggins on 30 November 2017.[11]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 5480". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 1 August 2025.
- ^ "Distance Results for NGC 5480". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 1 August 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 5480". Celestial Atlas. Retrieved 1 August 2025.
- ^ "NGC 5480". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 1 August 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 372". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 March 2026.
- ^ 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.
- ^ Perlmutter, S.; Pennypacker, C.; Graham, J. R.; Soifer, B. T. (1988). "Supernova 1988L in NGC 5480". International Astronomical Union Circular (4590): 1. Bibcode:1988IAUC.4590....1P.
- ^ "SN 1988L". Transient Name Server. IAU. Retrieved 1 August 2025.
- ^ "SN 2017iro". Transient Name Server. IAU. Retrieved 1 August 2025.
External links
[edit]
Media related to NGC 5480 at Wikimedia Commons- NGC 5480 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
