{{short description|Galaxy in the constellation Ursa Minor}} {{Infobox Galaxy | name = NGC 5144 | image =File:NGC 5144 PanS.jpg | caption =[[Pan-STARRS]] image of NGC 5144 | epoch = [[J2000]] | type = SAc pec <ref name=NED>NED, [http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5144&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES NGC 5144] (accessed 20-03-2012)</ref> | ra = {{RA|13|23|07}} | dec = {{DEC|70|27|43}} | dist_ly =154 [[light years|Mly]] (47.22 [[Megaparsec|Mpc]]) | constellation name = [[Ursa Minor]] | names = UGC 8420, PGC 46742, MRK 256, KUG 1321+707, MCG +12-13-005 |z=0.010477|appmag_v=13.1|appmag_b=13.4|size=64,500 [[light year|ly]] (estimated 19.78 [[kiloparsec|kpc]])|size_v=1.2' x 0.8'}}

'''NGC 5144''' is an [[unbarred spiral galaxy|unbarred spiral]] [[galaxy]] in the constellation of [[Ursa Minor]]. It has a [[velocity]] of 3,202 ± 9&nbsp;km/s corresponding to a [[Hubble's law|Hubble Distance]] of 47.2 ± 3.3 [[Parsec|megaparsecs]] (154 million light-years).<ref>{{Cite web |title=NASA/IPAC Extragalactic Database Results for NGC 5144 |url=https://ned.ipac.caltech.edu/byname?objname=NGC+5144&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 |access-date=2024-07-31 |website=ned.ipac.caltech.edu}}</ref> It was discovered by [[William Herschel]] in May 1791.<ref>{{Cite web |title=New General Catalog Objects: NGC 5100 - 5149 |url=https://cseligman.com/text/atlas/ngc51.htm#5144 |access-date=2024-07-31 |website=cseligman.com}}</ref> It is a possible [[field galaxy]] which does not belong to a group or cluster.<ref>{{Cite journal |last=Turner |first=E. L. |last2=Gott |first2=J. R., III |date=1976-11-01 |title=Groups of galaxies. I. A catalog. |url=https://ui.adsabs.harvard.edu/abs/1976ApJS...32..409T |journal=The Astrophysical Journal Supplement Series |volume=32 |pages=409–427 |doi=10.1086/190403 |issn=0067-0049}}</ref>

NGC 5144 is also a [[starburst galaxy]]<ref>{{Cite journal |last=Davoust |first=E. |last2=Contini |first2=T. |date=2004-03-01 |title=Starbursts in barred spiral galaxies. VI. HI observations and the K-band Tully-Fisher relation |url=https://ui.adsabs.harvard.edu/abs/2004A&A...416..515D |journal=Astronomy and Astrophysics |volume=416 |pages=515–527 |doi=10.1051/0004-6361:20031726 |issn=0004-6361|arxiv=astro-ph/9902174 }}</ref> and classified as a [[Markarian galaxies|Markarian galaxy]] (designated as MRK 256), since its core emits large amounts of [[Ultraviolet|ultraviolet light]].<ref>{{Cite journal |last=Mazzarella |first=Joseph M. |last2=Balzano |first2=Vicki A. |date=1986-12-01 |title=A Catalog of Markarian Galaxies |url=https://ui.adsabs.harvard.edu/abs/1986ApJS...62..751M |journal=The Astrophysical Journal Supplement Series |volume=62 |pages=751 |doi=10.1086/191155 |issn=0067-0049}}</ref><ref>{{Cite journal |last=Arakelian |first=M. A. |last2=Dibay |first2=E. A. |last3=Yesipov |first3=V. F. |last4=Markarian |first4=B. E. |date=1971-01-01 |title=The spectra of Markarian galaxies. III. |url=https://ui.adsabs.harvard.edu/abs/1971Afz.....7..177A |journal=Astrofizika |volume=7 |pages=177–187}}</ref>

==References== {{reflist}}

==External links== *{{WikiSky}} {{NGC objects:5001-6000}} {{Ursa Minor}}

{{DEFAULTSORT:NGC 5144}} [[Category:Unbarred spiral galaxies]] [[Category:NGC objects|5144]] [[Category:Principal Galaxies Catalogue objects|46742]] [[Category:UGC objects|8420]] [[Category:Ursa Minor]] [[Category:Markarian galaxies]] [[Category:Starburst galaxies]]

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