NGC 257

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

{{Infobox galaxy

| name = NGC 257

| image = NGC257 - SDSS DR14.jpg

| caption = SDSS image of NGC 257

| epoch = J2000

| constellation name = Pisces

| ra = {{RA|00|48|01.510}}{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183 |bibcode=2006AJ....131.1163S |s2cid=18913331 |issn=0004-6256 |doi-access=free }}

| dec = {{DEC|+08|17|49.45}}

| z = 0.017592{{cite web|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+257&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|title=NED results for object NGC 0257|publisher=National Aeronautics and Space Administration / Infrared Processing and Analysis Center|access-date=25 June 2017}}

| h_radial_v = 5274 km/s

| dist_ly = {{cvt|67.343|±|10.649|Mpc|Mly|lk=on|order=flip}}

| group_cluster =

| type = Scd?

| size = {{cvt|43100|pc|ly|lk=on|order=flip}}POSS1 103a-O values used.

| appmag_v =

| appmag_b = 13.7{{cite simbad|title=NGC 257|access-date=25 June 2017}}

| absmag_v =

| size_v = 3.0{{prime}} × 2.5{{prime}}

| notes =

| names = UGC 493, MGC+01-03-003, PGC 2818

}}

NGC 257 is a spiral galaxy in the Pisces constellation. It was discovered on December 29, 1790, by Frederick William Herschel.{{cite web|url=http://cseligman.com/text/atlas/ngc2a.htm#257|title=New General Catalogue objects: NGC 250 - 299|author=Seligman, Courtney|website=cseligman.com|access-date=25 June 2017}}