{{Short description| Group of galaxies about 20.6 million light-years from Earth }} {{Galaxy cluster | constellation = Andromeda, Perseus, Triangulum | name = NGC 1023 Group | member_no = ~23 plus 42 candidate members<ref>{{Cite journal|author=Trentham, Neil |author2=Tully, R. Brent|title=Dwarf galaxies in the NGC 1023 Group|journal=Monthly Notices of the Royal Astronomical Society|date=2009|volume=392|issue=2|pages=722–734|doi=10.1111/j.1365-2966.2009.15189.x|doi-access=free |arxiv=0906.2540|bibcode=2009MNRAS.398..722T|s2cid=18442520}}</ref><ref name="ned">{{cite web |title=NGC 1023 Group |website=Astronomy Sketch of the Day |date=March 2014 |url=http://www.asod.info/?p=11555 |access-date=2020-09-11}}</ref> | distance = {{cvt|20.6|Mly|Mpc}} | brightest_member = NGC 1023 | other_names = }}
The '''NGC 1023 Group''' is a group of galaxies about {{convert|20.6|e6ly|Mpc|lk=on}} away from Earth. It is a group in the Local Supercluster, along with the Local Group.<ref>{{cite web |url=http://www.atlasoftheuniverse.com/virgo.html |title=The Universe within 100 million Light Years - the Virgo Supercluster |publisher=Atlas of the Universe}}</ref>
==Members== {| class="wikitable" style="text-align:center;" |+'''Members of the group''' |- ! Name ! Type ! Magnitude |- | NGC 1023 | SB(rs)0 | 10.65 |- | NGC 925 | SAB(s)d | 10.96 |- | NGC 959 | Sdm: | 12.38 |- | NGC 891 | SA(s)b | 11.24 |- | NGC 1239 | SAB(rs)cd | 12.14 |- | NGC 1058 | SA(rs)c | 12.26 |- | NGC 1003 | SAcd | 12.1 |- | NGC 949 | SA(rs)b? | 11.8 |- | NGC 959 | Sdm? | 12.4 |- | IC 239 | SAB(rs)cd | 11.1 |- | UGC 2034 | Im | 13.1 |- | UGC 2023 | Im? | 13.0 |- | UGC 2165 | dE,N | 13.7 |- | UGC 2126 | SABdm? | 13.98 |- | UGC 2157 | Sdm? | 13.99 |- | NGC 1023A | IB? | 12.7 |- | UGC 2014 | Im? | 14.5 |- | UGC 1865 | Sm? | 14.42 |- | NGC 1023C | dE/I | 16.31 |- | NGC 1023B | dI | 16.35 |- | NGC 1023D | dE/I | 16.51 |- | GALEXASC J024016.48+373731.1 | dE,N | 16.66 |- | NGC 1023 GROUP:[TT2009] 42 | dE | 19.25 |- |}
* Probable (dwarfs): DDO 024, DDO 025. * Possible members: NGC 672, IC 1727, NGC 1156(?). * Possible (dwarfs): DDO 011, DDO 017, DDO 019, DDO 022, DDO 026.
==Map== The location of the NGC 1023 group within the Virgo Supercluster (as part of the Laniakea Supercluster) can be found near the center of this diagram - below the blue "Local Group" mark. <gallery widths="500px" heights="370px"> File:07-Laniakea (LofE07240).png </gallery>
==References== <references />
{{DEFAULTSORT:Ngc 1023 Group}} Category:NGC 1023 Group Category:Galaxy clusters Category:Virgo Supercluster
{{Galaxy-cluster-stub}}