UGC 4904

{{Short description|Galaxy in the constellation Lynx}} {{Infobox galaxy | name = UGC 4904 | image = UGC 4904 Sloan.png | caption = UGC 4904, imaged by the Sloan Digital Sky Survey | epoch = J2000 | constellation name = Lynx | ra = {{RA|09|17|22.062}}<ref name=ned /> | dec = {{DEC|+41|54|39.70}}<ref name=ned /> | dist_ly = {{convert|27.74 ± 1.96|Mpc|Mly|abbr=on|lk=on|order=flip}}<ref name="ned" /> | z = 0.005571<ref name=Nordgren/> | h_radial_v = 1665<ref name=Nordgren>{{cite journal|title=Close galaxy pairs in low and medium density regions: The southern sky|author1=Nordgren, Tyler E.|author2=Chengalur, Jayaram N.|author3=Salpeter, E. E.|author4=Terzian, Yervant |authorlink4=Yervant Terzian |journal=Astronomical Journal|volume=114|pages=913–931|date=1997|doi=10.1086/118523|bibcode=1997AJ....114..913N|doi-access=free}}</ref> | group_cluster = | type = SABdm<ref>{{cite journal | title=A Catalog of Visually Classified Galaxies in the Local (z ∼ 0.01) Universe|author1=Ann, H. B.|author2=Seo, Mira|author3=Ha, D. K.|journal=The Astrophysical Journal Supplement Series|volume=217|issue=2|pages=27–49|date=2015|bibcode=2015ApJS..217...27A|doi=10.1088/0067-0049/217/2/27|arxiv=1502.03545|s2cid=119253507}}</ref> | size = ~{{convert|9.58|kpc|ly|abbr=on|lk=on|order=flip}} (estimated)<ref name ="ned" /> | stars = | appmag_b = 15.0<ref name=ned>{{cite web | url= https://ned.ipac.caltech.edu/byname?objname=UGC+4904 | title=NED results for object UGC 4904 | accessdate=29 January 2017 | publisher=National Aeronautics and Space Administration / Infrared Processing and Analysis Center }}</ref> | appmag_v = | absmag_v = | size_v = | notes = Dwarf spiral galaxy with a supernova impostor which eventually exploded as an actual supernova | names = {{odlist | CGCG= 209-044 | MCG= +07-19-054 | PGC= 26231}}<ref name=ned/> | references = }} {{Sky|09|17|22.062|+|41|54|39.70}}

'''UGC 4904''' is a barred spiral galaxy in the constellation Lynx. Its velocity with respect to the cosmic microwave background is 1880 ± 15{{nbsp}}km/s, which corresponds to a Hubble distance of {{convert|27.74 ± 1.96|Mpc|Mly|abbr=on|lk=on|order=flip}}.<ref name="ned" /> The first known reference to this galaxy comes from Part 2 of the Morphological Catalogue of Galaxies, published in 1964, where it is listed as '''MCG +07-19-054'''.<ref>{{cite journal|bibcode=1964MCG...C02....0V | title=Morphological catalogue of galaxies. Part 2 | last1=Vorontsov-Vel'Yaminov | first1=B. A. | last2=Arkhipova | first2=V. P. | journal=Morphological Catalogue of Galaxies | date=1964 | volume=C02 }}</ref>

==Supernova== thumb|left|Swift Ultraviolet/Optical Telescope image of SN 2006jc On October 20, 2004, a supernova impostor was observed by Japanese amateur astronomer Kōichi Itagaki within the galaxy. This same star may have transitioned from a luminous blue variable star to a Wolf–Rayet star<ref>{{cite web | title=Massive Star Burps, Then Explodes | url=http://chandra.harvard.edu/press/07_releases/press_040407.html | publisher=Univ. of California, at Berkeley | accessdate=April 4, 2007}}</ref> shortly before it was observed as blowing up as supernova SN 2006jc (Type{{nbsp}}Ibn, mag. 13.8)<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2006jc | url=https://www.wis-tns.org/object/2006jc | publisher = IAU | access-date=13 November 2024}}</ref> on October 11, 2006.<ref>{{cite web | title=NASA – Supernova Imposter Goes Supernova | url=http://www.nasa.gov/centers/goddard/news/topstory/2007/supernova_imposter.html | publisher=NASA.Gov | accessdate=April 4, 2007}}</ref> {{clear left}}

== References ==

== External links == * [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=UGC+4904 UGC 4904] in a SIMBAD * [http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=UGC%204904 UGC 4904 in NASA's Extragalactic Database] {{WikiSky}} {{Lynx (constellation)}}

Category:Barred spiral galaxies Category:Lynx (constellation) 04904 026231 Category:Dwarf spiral galaxies Category:Magellanic spiral galaxies +07-19-054