Astronomy:NGC 5020
| 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] |
| Helio 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[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
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
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
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 5020". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+5020.
- ↑ 2.0 2.1 "LGG 335". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+335.
- ↑ Herschel, William (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London 76: 457–499. doi:10.1098/rstl.1786.0027. Bibcode: 1786RSPT...76..457H. https://zenodo.org/record/1432282/files/article.pdf.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5020". https://cseligman.com/text/atlas/ngc50.htm#5020.
- ↑ "NGC 5020". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5020.
- ↑ 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. (1991-02-01). "Supernova 1991J in NGC 5020". International Astronomical Union Circular 5196: 1. Bibcode: 1991IAUC.5196....1M. http://www.cbat.eps.harvard.edu/iauc/05100/05196.html#Item1.
- ↑ "SN 1991J". IAU. https://www.wis-tns.org/object/1991J.
- ↑ Jin, Z.-w.; Gao, X.; Migotto, K.; Fremling, C. (2015-01-01). "Supernova 2015D in NGC 5020 = PSN J13124116+1236018". Central Bureau Electronic Telegrams 4051: 1. Bibcode: 2015CBET.4051....1J. https://ui.adsabs.harvard.edu/abs/2015CBET.4051....1J.
- ↑ "SN 2015D". IAU. https://www.wis-tns.org/object/2015D.
External links
- NGC 5020 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
13h 12m 39.8542s, +12° 35′ 59.273″
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