{{Short description|Galaxy in the constellation Boötes}} {{Infobox galaxy|name=NGC 5008|image=File:NGC5008 - SDSS DR14.jpg|caption=[[Sloan Digital Sky Survey|SDSS]] image of spiral galaxy NGC 5008|constellation name=[[Boötes (constellation)|Boötes]]|z=0.031015|h_radial_v=9,308 km/s|dist_ly=525 [[light-year|Mly]] (160.9 [[Megaparsecs|Mpc]])|ra=14h 10m 57.24s|dec=+25d 29m 50.00s|group_cluster=[[Hickson Compact Group]] 71|appmag_v=13.7|size=460,000 [[Light-Year|ly]] (140.5 [[kiloparsec|kpc]]) (estimated)|names=[[New General Catalogue|NGC]] 5008, [[Principal Galaxies Catalogue|PGC]] 50629, [[Index Catalogue|IC]] 4381, [[Uppsala General Catalogue|UGC]] 9073, [[Catalogue of Galaxies and of Clusters of Galaxies|CGCG]] 133-001, HCG 071A, NSA 094791, [[Morphological Catalogue of Galaxies|MCG]] +04-33-42, UZC J141057.3+252951, [[2MASX]] J14105726+2529502, [[Sloan Digital Sky Survey|SDSS]] J14105726+2529502, [[NRAO VLA Sky Survey|NVSS]] J141057+252945, HOLM 598A, [[Lyon-Meudon Extragalactic Database|LEDA]] 50629|epoch=[[J2000]]|appmag_b=14.2|sbrightness=14.07}}
'''NGC 5008''' (also known as '''IC 4381''') is a massive [[barred spiral galaxy]] located in the [[Boötes]] constellation.<ref>{{Cite web |title=NGC 5008 - Spiral Galaxy in Boötes {{!}} TheSkyLive.com |url=https://theskylive.com/sky/deepsky/ngc5008-object |access-date=2024-04-25 |website=theskylive.com}}</ref>
== Details == It is located 530 million [[light-year]]s away from the [[Solar System]] and was discovered by [[Heinrich Louis d'Arrest|Heinrich d'Arrest]], a [[Prussia]]n astronomer on May 18, 1862 as NGC 5008.<ref name=":0">{{Cite web |title=New General Catalog Objects: NGC 5000 - 5049 |url=https://cseligman.com/text/atlas/ngc50.htm#5008 |access-date=2024-04-25 |website=cseligman.com}}</ref> It was again discovered on June 15, 1895 by [[Stéphane Javelle|Stephane Javelle]] who listed it in the [[Index Catalogue]] as IC 4381.<ref name=":0" /> With a [[diameter]] of 400,000 light-years, NGC 5008 easily dwarfs the [[Milky Way]] and is considered one of the [[List of largest galaxies|largest galaxies]].<ref>{{Cite web |title=Your NED Search Results |url=https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=37150&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1 |access-date=2024-04-25 |website=ned.ipac.caltech.edu}}</ref> According to the [[SIMBAD]] Database, NGC 5008 has a [[Low-ionization nuclear emission-line region|LINER]] type [[active galactic nucleus]].<ref>{{Cite web |title=NGC 5008 |url=https://simbad.u-strasbg.fr/simbad/sim-id?Ident=ngc+5008&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |access-date=2024-04-25 |website=simbad.u-strasbg.fr}}</ref> It has a surface brightness [[Magnitude (astronomy)|magnitude]] of 14.07, meaning it is a [[Low surface brightness galaxy|low-surface brightness galaxy]].<ref>{{Cite web |title=Data from NGC and IC catalogue by Wolfgang Steinicke from NGC 5000-5099 |url=http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N5000_exc_web.htm |access-date=2024-04-25 |website=astrovalleyfield.ca}}</ref>
=== Possible central black hole === A [[quasar]] the mass of about 432 million suns (Radius of 1.834K Suns) take place at the center of NGC 5008. By calculating the [[Virial theorem]]<ref>{{Cite web |title=Virial Theorem {{!}} COSMOS |url=https://astronomy.swin.edu.au/cosmos/v/Virial+Theorem |access-date=2025-09-30 |website=astronomy.swin.edu.au}}</ref> and the calculation of luminosity with [[flux]]es,<ref>{{Cite web|title=ngc 5008|url=https://simbad.cds.unistra.fr/simbad/sim-id|website=simbad.cds.unistra.fr|access-date=2025-11-28}}</ref> it was possible to calculate the mass of the [[quasar]].
== Group membership == [[File:HCG 71 SDSS.jpg|thumb|The four galaxies of Hickson compact group 71.]] NGC 5008 is the dominant member of the [[Hickson Compact Group|Hickson Compact group]], HCG 71. The other members of the group are IC 4382, PGC 50640 and PGC 50641, which is further away compared to the other galaxies.<ref>{{Cite web |title=Hickson's Compact Groups (HCG) of Galaxies |url=https://cseligman.com/text/hickson.htm#hcg71 |access-date=2024-04-25 |website=cseligman.com}}</ref>
== References == {{reflist}}
{{NGC objects:5001-6000}} {{Boötes}}
[[Category:NGC objects|5008]] [[Category:IC objects]] [[Category:UGC objects|09073]] [[Category:Barred spiral galaxies]] [[Category:Astronomical objects discovered in 1862]] [[Category:Boötes]] [[Category:Principal Galaxies Catalogue objects|50629]] [[Category:MCG objects|+04-33-42]] [[Category:LEDA objects|50629]]