IC 758

{{Short description|Galaxy in the constellation Ursa Major}}

{{Use dmy dates|date=June 2025}}

{{Sky|12|04|11.9363|+|62|30|19.199}}

{{Infobox Galaxy

| name = IC{{nbsp}}758

| image = Stirring the interstellar soup (potw2523a).jpg

| caption= IC 758 imaged by the Hubble Space Telescope

| alt = A spiral galaxy with a generally soft and slightly faint appearance. It glows most brightly around the pale yellow bar across its centre. It has two spiral arms which wrap around the centre, quickly broadening out to join a wide, faint circular halo around the galaxy. Glowing, sparkling patches in the disc show stars forming in nebulae. Behind the galaxy, distant galaxies appear as orange dots on a black background.

| epoch = J2000

| constellation name = Ursa Major

| ra = {{RA|12|04|11.9363}}{{cite web

| website = NASA/IPAC Extragalactic Database

| publisher = NASA and Caltech

| title=Results for object IC 0758

| url = https://ned.ipac.caltech.edu/byname?objname=IC+0758

| access-date = 25 May 2025}}

| dec = {{DEC|+62|30|19.199}}{{r|ned}}

| z = {{val|0.004256|0.000006}}{{r|ned}}

| h_radial_v = {{val|1276|2|u=km/s|fmt=commas}}{{r|ned}}

| dist_ly = {{convert|26.700 ± 3.400|Mpc|Mly|abbr=on|lk=on|order=flip}}{{r|ned}}

| group_cluster = NGC 4036 Group (LGG 266)

| type = SB(rs)cd:{{r|ned}}

| size = ~{{convert|15.53|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}}

| appmag_v = 14.2{{r|ned}}

| size_v = {{Val|1.65|×|1.15|u=arcminute}}{{r|ned}}

| notes =

| names = {{odlist | IRAS= F12017+6246 | PGC= 38173 | UGC= 7056 | MCG= +11-15-014 | CGCG= 315-009}}{{r|ned}}

}}

IC 758 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is {{val|1402|9|u=km/s|fmt=commas}}, which corresponds to a Hubble distance of {{convert|20.67 ± 1.45|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} However, two non-redshift measurements give a much farther distance of {{convert|26.700 ± 3.400|Mpc|Mly|abbr=on|lk=off|order=flip}}.{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=IC+758 | title = Distance Results for IC 758 | website = NASA/IPAC EXTRAGALACTIC DATABASE | publisher = NASA | access-date = 25 May 2025}} It was discovered by American astronomer Lewis Swift on 17 April 1888.{{cite web | url = https://cseligman.com/text/atlas/ic7a.htm#ic758 | title = Index Catalogue Objects: IC{{nbsp}}758 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 25 May 2025}}{{cite journal |last=Swift |first=Lewis |title=Catalogue No. 7 of Nebulae discovered at the Warner Observatory |journal=Astronomische Nachrichten |volume=120 |pages=33 |year=1889 |bibcode=1889AN....120...33S}}

The SIMBAD database lists IC 758 as an active galactic nucleus candidate, 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. {{cite simbad | title=IC 758 | access-date=17 December 2024}}