{{Short description|Galaxy in the constellation Centaurus}} {{Use dmy dates|date=February 2026}} {{Infobox Galaxy | name = [[New General Catalogue|NGC]] 5516 | image = NGC 5516 DSS.jpg | caption = NGC 5516 imaged by [[Sloan Digital Sky Survey|SDSS]] | alt = | epoch = [[J2000]] | constellation name = [[Centaurus]] | ra = {{RA|14|15|54.7000}}{{r|ned}} | dec = {{DEC|-48|06|53.257}}{{r|ned}} | z = {{val|0.013753|0.0000670}}{{r|ned}} | h_radial_v = {{val|4123|20|u=km/s|fmt=commas}}{{r|ned}} | dist_ly = {{convert|69.500 ± 4.212|Mpc|Mly|abbr=on|lk=on|order=flip}}{{r|ned}} | group_cluster = LDC 1050{{r|SIMBAD}} | type = SA0<sup>-(s)</sup>{{r|ned}} | size = ~{{convert|71.21|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}} | appmag_v = 13.00{{r|ned}} | size_v = {{Val|1.8|×|1.2|u=arcminute}}{{r|ned}} | notes = | names = {{odlist | 2MASX= J14155467-4806535 | name= ESO 221- G 034 | PGC= 50960}}{{r|ned}} }}
'''NGC 5516''' is a [[lenticular galaxy]] in the [[constellation]] of [[Centaurus]]. Its velocity with respect to the [[cosmic microwave background]] is {{val|4328|25|u=km/s|fmt=commas}}, which corresponds to a [[Hubble's law|Hubble distance]] of {{convert|63.83 ± 4.49|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} However, three ''non-redshift'' measurements give a farther mean distance of {{convert|69.500 ± 4.212|Mpc|Mly|abbr=on|lk=off|order=flip}}.{{r|ned-distance}} It was discovered by British astronomer [[John Herschel]] on 1 July 1834.{{r|selig}}
NGC 5516 has a possible [[active galactic nucleus]], 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.{{r|SIMBAD|AGN}}
==LDC 1050 Group== NGC 5516 is a member of a group of galaxies known as '''LDC 1050'''. This group contains six galaxies, including {{ill|ESO 221-33|d|Q60238796}}, {{ill|ESO 271-26|d|Q60238799}}, {{ill|ESO 221-37|d|Q60238812}}, {{ill|6dFGS gJ141604.6-480738|d|Q86644439}}, and {{ill|2MASX J14143086-4826542|d|Q78760175}}.{{r|ApJ2007|LDC1050}}
==Supernovae== Two [[supernova]]e have been observed in NGC 5516: * '''AT 2017kdz''' (also known as ''MASTER OT J141551.21-480802.6'') ([[type Ia supernova|Type{{nbsp}}Ia]], mag. 16.4) was discovered by [[MASTER|MASTER robotic Net]] on 9 April 2017.{{r|ATEL10287|ATEL10347|TNS-2017kdz}} * '''SN 2026dez''' (Type Ia, mag. 18.642) was discovered by [[Asteroid Terrestrial-impact Last Alert System|ATLAS]] on 14 February 2026.{{r|TNS-2026dez}} This supernova has a significant projected separation of {{convert|34|kpc|kly|abbr=on|lk=off|order=flip}} from NGC 5516.{{r|AN}}
== See also == * [[List of NGC objects (5001–6000)]]
==References== <references>
<ref name=ned>{{cite web | website = NASA/IPAC Extragalactic Database | publisher = [[NASA]] and [[California Institute of Technology|Caltech]] | title = Results for object NGC 5516 | url = https://ned.ipac.caltech.edu/byname?objname=NGC+5516 | access-date = 17 February 2026}}</ref>
<ref name="ned-distance">{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5516 | title = Distance Results for NGC 5516 | website = NASA/IPAC EXTRAGALACTIC DATABASE | publisher = [[NASA]] | access-date = 17 February 2026}}</ref>
<ref name=selig>{{cite web | url = https://cseligman.com/text/atlas/ngc55.htm#5516 | title = New General Catalogue Objects: NGC 5516 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 17 February 2026}}</ref>
<ref name=AGN>{{cite journal |last1=Asmus |first1=D. |last2=Greenwell |first2=C. L. |last3=Gandhi |first3=P. |last4=Boorman |first4=P. G. |last5=Aird |first5=J. |last6=Alexander |first6=D. M. |last7=Assef |first7=R. J. |last8=Baldi |first8=R. D. |last9=Davies |first9=R. I. |last10=Hönig |first10=S. F. |last11=Ricci |first11=C. |last12=Rosario |first12=D. J. |last13=Salvato |first13=M. |last14=Shankar |first14=F. |last15=Stern |first15=D. |title=Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC |journal=Monthly Notices of the Royal Astronomical Society |date=2020 |volume=494 |issue=2 |page=1784 |doi=10.1093/mnras/staa766 |doi-access=free |arxiv=2003.05959 |bibcode=2020MNRAS.494.1784A}}</ref>
<ref name=SIMBAD>{{cite simbad | title=NGC 5516 | access-date=17 February 2026}}</ref>
<ref name=LDC1050>{{cite simbad | title=[CHM2007] LDC 1050 | access-date=17 February 2026}}</ref>
<ref name=ApJ2007>{{cite journal|last1=Crook |first1=Aidan C. |last2=Huchra |first2=John P. |last3=Martimbeau |first3=Nathalie |last4=Masters |first4=Karen L. |last5=Jarrett |first5=Tom |last6=Macri |first6=Lucas M. |title=Groups of Galaxies in the Two Micron All Sky Redshift Survey |journal=The Astrophysical Journal |date=2007 |volume=655 |issue=2 |pages=790–813 |doi=10.1086/510201 |arxiv=astro-ph/0610732 |bibcode=2007ApJ...655..790C}}</ref>
<ref name=TNS-2017kdz>{{cite web | website= Transient Name Server | title= AT 2017kdz | url= https://www.wis-tns.org/object/2017kdz | publisher= [[International Astronomical Union|IAU]] | access-date= 17 February 2026}}</ref>
<ref name=ATEL10287>{{cite journal |last1=Pogrosheva |first1=T. |last2=Lipunov |first2=V. |last3=Podesta |first3=R. |last4=Levato |first4=H. |last5=Gorbovskoy |first5=E. |last6=Tiurina |first6=N. |last7=Balanutsa |first7=P. |last8=Kuznetsov |first8=A. |last9=Kornilov |first9=V. |last10=Chazov |first10=V. |last11=Vlasenko |first11=D. |last12=Vladimirov |first12=V. |last13=Gress |first13=O. |last14=Shumkov |first14=V. |last15=Gorbunov |first15=I. |last16=Krylov |first16=A. |last17=Lopez |first17=C. |last18=Podesta |first18=F. |last19=Saffe |first19=C. |last20=Gabovich |first20=A. |title=Master-Oafa PSN in NGC5516 |journal=The Astronomer's Telegram |date=2017 |volume=10287 |page=1 |bibcode=2017ATel10287....1P | url = https://www.astronomerstelegram.org/?read=10287}}</ref>
<ref name=ATEL10347>{{cite journal |last1=Prieto |first1=J. L. |last2=Dong |first2=S. |title=Spectroscopic Classification of MASTER OT J141551.21-480802.6 as a SN Ia |journal=The Astronomer's Telegram |date=2017 |volume=10347 |page=1 |bibcode=2017ATel10347....1P | url = https://www.astronomerstelegram.org/?read=10347}}</ref>
<ref name=TNS-2026dez>{{cite web | website= Transient Name Server | title= SN 2026dez | url= https://www.wis-tns.org/object/2026dez | publisher= [[International Astronomical Union|IAU]] | access-date= 17 February 2026}}</ref>
<ref name=AN>{{cite journal |last1=Smith |first1=K. W. |last2=Young |first2=D. R. |last3=Nicholl |first3=M. |title=ATLAS26bty (AT2026dez): discovery of a rising transient 34 kpc offset from NGC 5516 (60 Mpc) |journal=Transient Name Server Astronote |date=2026 |volume=35 |page=1 |bibcode=2026TNSAN..35....1S | url = https://www.wis-tns.org/astronotes/astronote/2026-35}}</ref>
</references>
==External links== {{WikiSky}}
{{Sky|14|15|54.7000|-|48|06|53.257}} {{Centaurus}} {{ngc60}} {{Catalogs|NGC=5516}}
[[Category:NGC objects|5516]] [[Category:Principal Galaxies Catalogue objects|050960]] [[Category:ESO objects|221- G 034]] [[Category:Centaurus]] [[Category:Lenticular galaxies]] [[Category:Astronomical objects discovered in 1834|18340701]] [[Category:Discoveries by John Herschel]]