NGC 755

{{Short description|Galaxy in the constellation Cetus}}

{{Infobox galaxy

|name=NGC 755

|image=NGC755 - SDSS DR14.jpg

|caption=NGC 755 as seen from the Sloan Digital Sky Survey

|alt=

|epoch=J2000

|constellation name=Cetus

|ra={{RA|01|56|22.685}}

|dec={{DEC|-09|03|41.15}}

|z=0.005490

|h_radial_v=1641.2 km/s

|gal_v=

|dist_ly={{cvt|21.3|Mpc|Mly|order=flip|lk=on}}

|group_cluster=

|type=SBcd

|mass=

|mass_light_ratio=

|size=

|stars=

|appmag_v=

|appmag_b=13.2

|absmag_v=−18.27

|size_v=

|half_light_radius_pc=

|half_light_radius_arcminsec=|h1_scale_length_pc=

|h1_scale_length_arcminsec=

|xray_radius_pc=

|xray_radius_arcminsec=

|notes=

|names={{odlist|NGC=763|PGC=7262|MCG=-02-06-005}}

|references=

}}

NGC 755 is an emission line spiral galaxy in the constellation of Cetus.{{Cite simbad|title=NGC 755|access-date=2019-09-02}}{{Cite web|url=https://in-the-sky.org/data/object.php?id=799|title=The galaxy NGC 755 - In-The-Sky.org|last=Ford|first=Dominic|website=in-the-sky.org|language=en|access-date=2019-09-02}} The galaxy's velocity of 1641.2 km/s was used to calculate its distance using the Tully–Fisher relation.{{Cite book|last1=Kenn|first1=Franz|last2=Jazsa|first2=Gyula|last3=Gentile|first3=Gianfranco|last4=Klein|first4=Uli|title=Proceedings of Baryons in Dark Matter Halos — PoS(BDMH2004) |chapter=The dark halo in the spiral galaxy NGC 755 |date=2004-12-01 |pages=77|doi=10.22323/1.014.0077|bibcode=2004bdmh.confE..77K|id=77|doi-access=free}} Its dark matter halo was found to be core-dominated, in agreement with predictions from the lambda-CDM model of cosmology.