NGC 5905

{{Short description|Galaxy in the constellation Draco}} {{Use dmy dates|date=December 2025}} {{Infobox Galaxy | name = [[New General Catalogue|NGC]] 5905 | image = NGC 5905 SDSS2.jpg | caption = NGC 5905 imaged by [[Sloan Digital Sky Survey|SDSS]] | alt = | epoch = [[J2000]] | constellation name = [[Draco (constellation)|Draco]] | ra = {{RA|15|15|23.3243}}{{r|ned}} | dec = {{DEC|+55|31|01.995}}{{r|ned}} | z = {{val|0.011308|0.0000170}}{{r|ned}} | h_radial_v = {{val|3390|5|u=km/s|fmt=commas}}{{r|ned}} | dist_ly = {{convert|36.536 ± 2.556|Mpc|Mly|abbr=on|lk=on|order=flip}}{{r|ned}} | group_cluster = NGC 5908 group (LGG 395) | type = SB(r)b{{r|ned}} | size = ~{{convert|49.95|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}} | appmag_v = 12.49{{r|ned}} | size_v = {{Val|4.0|×|2.6|u=arcminute}}{{r|ned}} | notes = | names = {{odlist | 2MASX= J15152332+5531015 | CGCG= 274-036 | IRAS= 15140+5541 | MCG= +09-25-038 | PGC= 54445 | UGC= 9797}}{{r|ned}} }}

'''NGC 5905''' is a [[barred spiral galaxy]] in the [[constellation]] of [[Draco (constellation)|Draco]]. Its velocity with respect to the [[cosmic microwave background]] is {{val|3454|7|u=km/s|fmt=commas}}, which corresponds to a [[Hubble's law|Hubble distance]] of {{convert|50.95 ± 3.57|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} However, 14 ''non-redshift'' measurements give a much closer mean distance of {{convert|36.536 ± 2.556|Mpc|Mly|abbr=on|lk=off|order=flip}}.{{r|ned-distance}} It was discovered by German-British astronomer [[William Herschel]] on 5 May 1788.{{r|herschel|selig}}

NGC 5905 has an [[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|AGN|SIMBAD}}

NGC 5905 is also a [[Seyfert galaxy|Seyfert]] I galaxy, i.e. it has a [[quasar]]-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.{{r|ned}}

==NGC 5908 group== According to A.M. Garcia, NGC 5905 is part of the NGC 5908 [[galaxy group|group]] (also known as [[Lyons Groups of Galaxies|LGG]] 395) which has at least seven members, including [[NGC 5820]], [[NGC 5821]], {{ill|NGC 5874|fr}}, [[NGC 5876]], {{ill|NGC 5908|fr}}, and {{ill|UGC 9759|d|Q60239345}}.{{r|garcia|LGG395}}

==Supernova== One [[supernova]] has been observed in NGC 5905: * '''SN 1963O''' (type unknown, mag. 16) was discovered by Swiss astronomer [[Paul Wild (Swiss astronomer)|Paul Wild]] on 17 August 1963.{{r|IAUC1842|TNS-1963O}}

== 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 5905 | url = https://ned.ipac.caltech.edu/byname?objname=NGC+5905 | access-date = 11 December 2025}}</ref>

<ref name=ned-distance>{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5905 | title = Distance Results for NGC 5905 | website = NASA/IPAC Extragalactic Database | publisher = [[NASA]] | access-date = 11 December 2025}}</ref>

<ref name=herschel>{{cite journal |last=Herschel |first=William |date=1789 |title=Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens |journal=[[Philosophical Transactions of the Royal Society of London]] |volume=79 |pages=212–255 |bibcode=1789RSPT...79..212H |doi=10.1098/rstl.1789.0021 |doi-access=free}}</ref>

<ref name=selig>{{cite web | url = https://cseligman.com/text/atlas/ngc59.htm#5905 | title = New General Catalogue Objects: NGC 5905 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 11 December 2025}}</ref>

<ref name=SIMBAD>{{cite simbad | title=NGC 5905 | access-date=11 December 2025}}</ref>

<ref name=LGG395>{{cite simbad | title=LGG 395 | access-date=11 December 2025}}</ref>

<ref name=AGN>{{cite journal|last1=Véron-Cetty |first1=M.-P. |last2=Véron |first2=P. |title=A catalogue of quasars and active nuclei: 13th edition |journal=Astronomy and Astrophysics |date=2010 |volume=518 |pages=A10 |doi=10.1051/0004-6361/201014188 |bibcode=2010A&A...518A..10V}}</ref>

<ref name=garcia>{{cite journal | bibcode=1993A&AS..100...47G | title=General study of group membership. II. Determination of nearby groups | last1=Garcia | first1=A. M. | journal=Astronomy and Astrophysics Supplement Series | date=1993 | volume=100 | page=47}}</ref>

<ref name=IAUC1842>{{cite journal | url = http://www.cbat.eps.harvard.edu/IAUCs/IAUC1842.jpg | title = SUPERNOVA IN NGC 5905 | last1 = Wild | first1 = Paul | editor-last1 = Thernöe | editor-first1 = K. A. | date = 25 September 1963 | issue = 1842 | page = 1 | journal = Central Bureau for Astronomical Telegrams | publisher = [[International Astronomical Union|IAU]] | access-date = 11 December 2025}}</ref>

<ref name=TNS-1963O>{{cite web | website=Transient Name Server | title= SN 1963O | url= https://www.wis-tns.org/object/1963O | publisher= [[International Astronomical Union|IAU]] | access-date= 11 December 2025}}</ref>

</references>

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

[[Category:NGC objects|5905]] [[Category:Principal Galaxies Catalogue objects|054445]] [[Category:MCG objects|+09-25-038]] [[Category:IRAS catalogue objects|15140+5541]] [[Category:UGC objects|09797]] [[Category:Draco (constellation)]] [[Category:Barred spiral galaxies]] [[Category:Astronomical objects discovered in 1788|17880505]] [[Category:Discoveries by William Herschel]] [[Category:Seyfert galaxies]]