{{Short description|Galaxy in the constellation Hyrda}} {{Use dmy dates|date=July 2025}} {{Infobox Galaxy | name = [[New General Catalogue|NGC]]{{nbsp}}3285B | image = Swirling spiral in Hydra (potw2529a).jpg | caption = NGC 3285B imaged by the [[Hubble Space Telescope]]. SN 2023xqm is visible as a bright blue-white star below and to the left of the galaxy's nucleus. | alt = A spiral galaxy with a disc made up of several swirling arms. Patchy blue clouds of gas are speckled over the disc, where stars are forming and lighting up the gas around them. The core of the galaxy is large and shines brightly gold, while the spiral arms are a paler and faint reddish colour. Neighbouring galaxies - from small, elongated spots to larger swirling spirals - can be seen across the black background. | epoch = [[J2000]] | constellation name = [[Hydra (constellation)|Hydra]] | ra = {{RA|10|34|36.8767}}<ref name="ned">{{cite web | website = NASA/IPAC Extragalactic Database | publisher = [[NASA]] and [[California Institute of Technology|Caltech]] | title = Results for object NGC 3285B | url = https://ned.ipac.caltech.edu/byname?objname=NGC+3285B | access-date = 17 July 2025}}</ref> | dec = {{DEC|-27|39|10.468}}{{r|ned}} | z = {{val|0.009847|0.0000033}}{{r|ned}} | h_radial_v = {{val|2952|10|u=km/s|fmt=commas}}{{r|ned}} | dist_ly = {{convert|41.880 ± 0.867|Mpc|Mly|abbr=on|lk=on|order=flip}}{{r|ned}} | group_cluster = NGC 3312 group (LGG 210), Hydra Cluster | type = SB(rs)b{{r|ned}} | size = ~{{convert|30.92|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}} | appmag_v = 13.86{{r|ned}} | size_v = {{Val|1.5|×|1.1|u=arcminute}}{{r|ned}} | notes = | names = {{odlist | name= ESO 501- G 018 | IRAS= 10322-2723 | MCG= -04-25-022 | PGC= 31293 | 2MASX= J10343687-2739108}}{{r|ned}} }}
'''NGC{{nbsp}}3285B''' is a [[barred spiral galaxy]] in the [[constellation]] of [[Hydra (constellation)|Hydra]]. Its velocity with respect to the [[cosmic microwave background]] is {{val|3295|26|u=km/s|fmt=commas}}, which corresponds to a [[Hubble's law|Hubble distance]] of {{convert|48.60 ± 3.43|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} However, five ''non-redshift'' measurements give a closer distance of {{convert|41.880 ± 0.867|Mpc|Mly|abbr=on|lk=off|order=flip}}.<ref>{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3285B | title = Distance Results for NGC 3285B | website = NASA/IPAC EXTRAGALACTIC DATABASE | publisher = [[NASA]] | access-date = 17 July 2025}}</ref> The earliest known reference to this galaxy comes from the 1964 book, ''Reference Catalogue of Bright Galaxies'', written by [[Antoinette de Vaucouleurs]], [[Gérard de Vaucouleurs]], and [[Harlow Shapley]].<ref>{{cite book|last1=De Vaucouleurs |first1=Gerard Henri |last2=De Vaucouleurs |first2=Antoinette |last3=Shapley |first3=Harlow |title=Reference catalogue of bright galaxies |date=1964 |bibcode=1964rcbg.book.....D}}</ref> Therefore, this galaxy, despite its common name, was not a part of the original [[New General Catalogue]].
==NGC 3312 group and Hydra cluster== [[File:NGC 3285B imaged by Legacy Surveys.jpg|thumb|left|NGC 3285B imaged by [[Dark Energy Spectroscopic Instrument#DESI_Legacy_Imaging_Surveys|Legacy Surveys]]]] According to A. M. Garcia, NGC{{nbsp}}3285B is part of the NGC 3312 group (also known as [[Lyons Groups of Galaxies|LGG]] 210). This [[galaxy group|group of galaxies]] has at least 11 members, including [[NGC 3312]], [[NGC 3314A]], {{ill|IC 2597|fr}}, {{ill|ESO 437-15|d|Q60225594}}, {{ill|ESO 501-68|d|Q60225619}}, PGC 31441, PGC 31444, PGC 31496, PGC 31515 and PGC 31580.<ref>{{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=LGG210>{{cite simbad | title=LGG 210 | access-date=11 March 2026}}</ref>
NGC 3285B and all galaxies in the NGC 3312 group are part of the [[Hydra Cluster]] (Abell 1060).<ref>{{cite journal |last=Richter |first=O.-G. |title=The Hydra I cluster of galaxies. V. A catalogue of galaxies in the cluster area. |journal=Astronomy and Astrophysics Supplement Series |volume=77 |pages=237 |year=1989 |bibcode=1989A&AS...77..237R |url=https://ui.adsabs.harvard.edu/abs/1989A%26AS...77..237R}}</ref> The Hydra Cluster is the dominant cluster of the [[Hydra–Centaurus Supercluster]].<ref>{{cite web | url = http://www.atlasoftheuniverse.com/superc/hya.html | title = The Hydra Supercluster | last = Powell | first = Richard | website = Atlas of the Universe | access-date = 17 July 2025}}</ref> {{clear left}}
==Supernova== One [[supernova]] has been observed in NGC 3285B: * '''SN{{nbsp}}2023xqm''' ([[type Ia supernova|Type{{nbsp}}Ia]], mag. 17.885) was discovered by [[Asteroid Terrestrial-impact Last Alert System|ATLAS]] on 13 November 2023.<ref>{{cite web | website=Transient Name Server | title=SN{{nbsp}}2023xqm | url=https://www.wis-tns.org/object/2023xqm | publisher = [[International Astronomical Union|IAU]] | access-date=17 July 2025}}</ref> A detailed study of this explosion confirmed its classification as a typical Type Ia supernova.<ref>{{cite journal |last1=Zeng |first1=Xiangyun |last2=Luo |first2=Yijing |last3=Wang |first3=Xiaofeng |last4=Li |first4=Xin |last5=Yang |first5=Yi |last6=Zheng |first6=Sheng |last7=Zeng |first7=Shuguang |last8=Huang |first8=Yao |last9=Li |first9=Sai |last10=Howell |first10=D. Andrew |last11=Bostroem |first11=K. Azalee |last12=McCully |first12=Curtis |last13=Esamdin |first13=Ali |last14=Andrews |first14=Moira |last15=Farah |first15=Joseph R. |last16=Newsome |first16=Megan |last17=Zhang |first17=Haonan |last18=Zhang |first18=Peng |last19=Hu |first19=Lei |title=SN 2023xqm: A gradually fading Ia supernova exhibiting isolated high-velocity signatures |journal=Astronomy and Astrophysics |volume=698 |pages=A70 |year=2025 |bibcode=2025A&A...698A..70Z |url=https://ui.adsabs.harvard.edu/abs/2025A%26A...698A..70Z | display-authors=1 |doi=10.1051/0004-6361/202452864 |doi-access=free }}</ref>
== See also == * [[List of NGC objects (3001–4000)]]
==References== {{reflist}}
==External links== {{WikiSky}}
{{Sky|10|34|36.8767|-|27|39|10.468}} {{Hydra (constellation)}} {{Ngc40}}
[[Category:NGC objects|3285B]] [[Category:MCG objects|-04-25-022]] [[Category:IRAS catalogue objects|10322-2723]] [[Category:Principal Galaxies Catalogue objects|031293]] [[Category:Hydra (constellation)]] [[Category:Barred spiral galaxies]] [[Category:Astronomical objects discovered in 1964]] [[Category:ESO objects|501- G 018]]