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NGC 5020
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| NGC 5020 | |
|---|---|
 NGC 5020 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 13h 12m 39.8542s[1] |
| Declination | +12° 35′ 59.273″[1] |
| Redshift | 0.011214±0.00000700[1] |
| Heliocentric radial velocity | 3,362±2 km/s[1] |
| Distance | 176.2 ± 12.4 Mly (54.02 ± 3.79 Mpc)[1] |
| Group or cluster | NGC 5020 group (LGG 335)[2] |
| Apparent magnitude (V) | 12.5[1] |
| Characteristics | |
| Type | SAB(rs)bc[1] |
| Size | ~181,400 ly (55.62 kpc) (estimated)[1] |
| Apparent size (V) | 3.2′ × 2.7′[1] |
| Other designations | |
| IRAS 13102+1251, UGC 8289, MCG +02-34-003, PGC 45883, CGCG 072-024[1] | |
NGC 5020 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 3,663±21 km/s, which corresponds to a Hubble distance of 176.2 ± 12.4 Mly (54.02 ± 3.79 Mpc).[1] It was discovered by German-British astronomer William Herschel on 12 April 1784.[3][4]
NGC 5020 is an active galaxy nucleus candidate, 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]
NGC 5020 group
[edit]According to A.M. Garcia, NGC 5020 is the largest and brightest galaxy in a group of galaxies that bears its name, the NGC 5020 group (also known as LGG 335). The other two galaxies in the group are UGC 8253 and UGC 8255.[2][6]
Supernovae
[edit]Two supernovae have been observed in NGC 5020:
- SN 1991J (Type II, mag. 17) was discovered by Jean Mueller on 19 February 1991.[7][8]
- SN 2015D (Type II-P, mag. 17.5) was discovered by Zhangwei Jin and Xing Gao on 18 January 2015.[9][10]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 5020". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 25 August 2025.
- ^ a b "LGG 335". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 August 2025.
- ^ Herschel, William (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London. 76: 457–499. Bibcode:1786RSPT...76..457H. doi:10.1098/rstl.1786.0027.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5020". Celestial Atlas. Retrieved 25 August 2025.
- ^ "NGC 5020". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 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.
- ^ Mueller, J.; Mendenhall, J. D.; Filippenko, A. V.; Shields, J. C. (1 February 1991). "Supernova 1991J in NGC 5020". International Astronomical Union Circular (5196): 1. Bibcode:1991IAUC.5196....1M.
- ^ "SN 1991J". Transient Name Server. IAU. Retrieved 25 August 2025.
- ^ Jin, Z.-w.; Gao, X.; Migotto, K.; Fremling, C. (1 January 2015). "Supernova 2015D in NGC 5020 = PSN J13124116+1236018". Central Bureau Electronic Telegrams (4051): 1. Bibcode:2015CBET.4051....1J.
- ^ "SN 2015D". Transient Name Server. IAU. Retrieved 25 August 2025.
External links
[edit]
Media related to NGC 5020 at Wikimedia Commons- NGC 5020 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
