NGC 503

{{Short description|Elliptical galaxy in the constellation Pisces}}

{{Infobox galaxy

|name=NGC 503

|image=NGC503 - SDSS DR14.jpg

|alt=NGC 503

|caption=SDSS view of NGC 503

|epoch=J2000{{Cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+503|title=NGC 503|access-date=2017-12-09}}

|ra={{RA|01|23|28.4}}{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+503|title=Your NED Search Results|website=ned.ipac.caltech.edu|access-date=2017-10-05}}

|dec={{DEC|+33|19|54}}

|constellation name=Pisces{{Cite web|url=http://spider.seds.org/ngc/revngcic.cgi?NGC503|title=Revised NGC Data for NGC 503|website=spider.seds.org|access-date=2017-10-05}}

|type=E-S0

|appmag_b=15.1

|appmag_v=14.1

|h_radial_v=(5862 ± 21) km/s

|dist_ly=265 MlyAn object's distance from Earth can be determined using Hubble's law: v=H_o is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=H_o

|z=0.01975 ± 0.00007

|size_v=0.9' × 0.7'

|notes=

|names=PGC 5086, GC 5169, MGC +05-04-040, 2MASS J01232845+3319542 {{Cite web|url=http://cseligman.com/text/atlas/ngc5.htm#503|title=New General Catalog Objects: NGC 500 - 549|website=cseligman.com|language=en-US|access-date=2017-10-16}}

}}

NGC 503, also occasionally referred to as PGC 5086 or GC 5169, is an elliptical galaxy in the constellation Pisces. It is located approximately 265 million light-years from the Solar System and was discovered on 13 August 1863 by German astronomer Heinrich Louis d'Arrest.