Astronomy:NGC 3254
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| NGC 3254 | |
|---|---|
 SDSS image of NGC 3254 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo Minor |
| Right ascension | 10h 29m 19.922s[1] |
| Declination | +29° 29′ 29.18″[1] |
| Redshift | 0.004556[2] |
| Helio radial velocity | 1363 ± 10 km/s[2] |
| Apparent magnitude (V) | 11.60[2] |
| Apparent magnitude (B) | 12.29[2] |
| Characteristics | |
| Type | SA(s)bc[3] |
| Size | ~175,000 ly (53.65 kpc) (estimated)[3] |
| Apparent size (V) | 5.10′ × 0.90′[3] |
| Other designations | |
| IRAS F10265+2944, UGC 5685, MCG+05-25-018, PGC 30895[2] | |
NGC 3254 is a spiral galaxy in the constellation Leo Minor. It was discovered by German-British astronomer William Herschel on March 13, 1785.[4] It is a member of the NGC 3254 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.[5]
Supernovae
Two supernovae have been observed in NGC 3254:
- SN 1941B (type unknown, mag. 15.1) was discovered by Josef J. Johnson on 25 March 1941.[6][7][8] [Note: some sources incorrectly list the discovery date as 28 March 1941.]
- SN 2019np (Type Ia, mag. 13.0) was discovered by Kōichi Itagaki on 9 January 2019.[9] This supernova was the brightest observed in the year 2019.[10]
Gallery
-
![NGC 3254 imaged by the Hubble Space Telescope[11]](/wiki/images/thumb/7/70/NGC3254_-_HST_-_Potw2124a.jpg/120px-NGC3254_-_HST_-_Potw2124a.jpg)
NGC 3254 imaged by the Hubble Space Telescope[11]
![NGC 3254 imaged by the Hubble Space Telescope[11]](/wiki/File:NGC3254_-_HST_-_Potw2124a.jpg)
See also
References
- ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ 2.0 2.1 2.2 2.3 2.4 "NGC 3254". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3254.
- ↑ 3.0 3.1 3.2 "Results for object NGC 3254 (NGC 3254)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%203254&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2021-05-17.
- ↑ Seligman, Courtney. "New General Catalogue objects: NGC 3250 - 3299". http://cseligman.com/text/atlas/ngc32a.htm#3254. Retrieved 2021-05-17.
- ↑ "The Leo III Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galgrps/leoii.html.
- ↑ Elis, Stromgren (13 May 1941). "Circular No. 862". Observatory Copenhagen. http://www.cbat.eps.harvard.edu/IAUCs/IAUC0862.jpg.
- ↑ "SN 1941B". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=SN+1941B.
- ↑ "SN 1941B". IAU. https://www.wis-tns.org/object/1941B.
- ↑ "SN 2019np". IAU. https://www.wis-tns.org/object/2019np.
- ↑ Bishop, David. "Bright Supernovae - 2019". https://www.rochesterastronomy.org/sn2019/index.html.
- ↑ "A Galactic Powerhouse". https://esahubble.org/images/potw2124a/.
External links
Template:NGC objects:3000-3499
Coordinates: 
10h 29m 19.922s, +29° 29′ 29.18″
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