NGC 5681

{{Short description|Galaxy in the constellation Boötes}} {{Use dmy dates|date=June 2025}} {{Sky|14|35|42.9043|+|08|18|02.313}} {{Infobox Galaxy | name = [[New General Catalogue|NGC]]{{nbsp}}5681 | image = NGC 5681 SDSS2.jpg | caption= NGC 5681 imaged by [[Sloan Digital Sky Survey|SDSS]] | alt = | epoch = [[J2000]] | constellation name = [[Boötes]] | ra = {{RA|14|35|42.9043}}<ref name="ned">{{cite web | website = NASA/IPAC Extragalactic Database | publisher = [[NASA]] and [[California Institute of Technology|Caltech]] | title=Results for object NGC 5681 | url = https://ned.ipac.caltech.edu/byname?objname=NGC+5681 | access-date = 18 June 2025}}</ref> | dec = {{DEC|+08|18|02.313}}{{r|ned}} | z = {{val|0.026488|0.000009}}{{r|ned}} | h_radial_v = {{val|7941|3|u=km/s|fmt=commas}}{{r|ned}} | dist_ly = {{convert|101.550 ± 27.450|Mpc|Mly|abbr=on|lk=on|order=flip}}{{r|ned}} | group_cluster = | type = SA:(rs)bc{{r|ned}} | size = ~{{convert|33.63|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}} | appmag_v = 14.3{{r|ned}} | size_v = {{Val|0.9|×|0.6|u=arcminute}}{{r|ned}} | notes = | names = {{odlist | CGCG= 075-083 NED02 | IRAS= 14332+0831 | PGC= 52169 | UGC= 9393 | MCG= +02-37-025}}{{r|ned}} }}

'''NGC{{nbsp}}5681''' is a [[spiral galaxy]] in the [[constellation]] of [[Boötes]]. Its velocity with respect to the [[cosmic microwave background]] is {{val|8164|16|u=km/s|fmt=commas}}, which corresponds to a [[Hubble's law|Hubble distance]] of {{convert|120.41 ± 8.43|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} However, two ''non-redshift'' measurements give a closer distance of {{convert|101.550 ± 27.450|Mpc|Mly|abbr=on|lk=off|order=flip}}.<ref>{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5681 | title = Distance Results for NGC 5681 | website = NASA/IPAC EXTRAGALACTIC DATABASE | publisher = [[NASA]] | access-date = 18 June 2025}}</ref> It was discovered by German astronomer [[Heinrich Louis d'Arrest|Heinrich d'Arrest]] on 1 May 1865.<ref name="selig">{{cite web | url = https://cseligman.com/text/atlas/ngc56a.htm#5681 | title = Index Catalogue Objects: NGC{{nbsp}}5681 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 18 June 2025}}</ref>

NGC{{nbsp}}5681 is a [[radio galaxy]], i.e. it has giant regions of radio emission extending well beyond its visible structure.<ref name="SIMBAD"> {{cite simbad | title=NGC 5681 | access-date=22 December 2024}}</ref>

==Supernova== One [[supernova]] has been observed in NGC 5681: * '''SN 2006dt''' ([[type Ia supernova|Type{{nbsp}}Ia]], mag. 16.8) was discovered by the [[Lick Observatory]] Supernova Search (LOSS) on 20 July 2006.<ref>{{cite journal | bibcode=2006CBET..581....1L | title=Supernova 2006dt in NGC 5681 | last1=Lee | first1=N. | last2= Li | first2= W. | journal=Central Bureau Electronic Telegrams | issue=581 | date=2006-07-21 | page=1 | publisher=IAU | url=http://www.cbat.eps.harvard.edu/iau/cbet/000500/CBET000581.txt}}</ref><ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2006dt | url=https://www.wis-tns.org/object/2006dt | publisher = [[International Astronomical Union|IAU]] | access-date=18 June 2025}}</ref>

== See also == * [[List of NGC objects (5001–6000)]]

==References== {{reflist}}

==External links== * {{commons category-inline}} {{WikiSky}}

[[Category:NGC objects|5681]] [[Category:Boötes]] [[Category:spiral galaxies]] [[Category:Discoveries by Heinrich Louis d'Arrest]] [[Category:Astronomical objects discovered in 1865|18650501]] [[Category:Principal Galaxies Catalogue objects|052169]] [[Category:UGC objects|09393]] [[Category:MCG objects|+02-37-025]] [[Category:IRAS catalogue objects|14332+0831]] [[Category:Radio galaxies]]