NGC 743

{{Short description|Star cluster in the Cassiopeia constellation}}

{{Infobox open cluster|name=NGC 743|image=NGC 743 PanS.jpg|caption=The open cluster NGC 743|epoch=J2000|constellation=Cassiopeia|ra={{RA|02|00|18}}|dec={{DEC|+60|17|20}}|appmag_v=?|radius_ly=|mass_msol=|age=|notes=|names=}}

NGC 743 (also known as C 0155+599) is a small open cluster located in the Cassiopeia constellation.{{Cite web |title=NGC 743 - Open Cluster in Cassiopeia {{!}} TheSkyLive |url=https://theskylive.com/sky/deepsky/ngc743-object |access-date=2025-05-25 |website=theskylive.com}} It was discovered by 19th century English astronomer John Herschel on 29 September, 1829 and has a visual magnitude of 10.58, and is moving towards the Sun with a radial velocity of -18.16 km/s{{±|0.15}}.{{Cite web |title=SIMBAD references |url=https://simbad.cds.unistra.fr/simbad/sim-ref?bibcode=2021A&A...647A..19T |access-date=2025-05-25 |website=simbad.cds.unistra.fr}} It is located approximately 3812.76 light years, (1169 pc), from the Earth.{{Cite web |title=NGC 743 |url=https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+743 |access-date=2025-05-25 |website=simbad.u-strasbg.fr}} {{Cite web |title=By Name {{!}} NASA/IPAC Extragalactic Database |url=https://ned.ipac.caltech.edu/byname?objname=NGC+743&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 |access-date=2025-05-25 |website=ned.ipac.caltech.edu}}