NGC 366

{{short description|Open cluster in the constellation Cassiopeia}}

{{Use mdy dates|date=November 2016}}

{{Infobox open cluster

| name = NGC 366

| caption = PanSTARRS image of NGC 366

| constellation = Cassiopeia

| epoch = J2000

| ra = {{RA|01|06|26.0}}{{cite web

| title=NASA/IPAC Extragalactic Database

| work=Results for NGC 0366

| url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+366&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&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

| access-date=September 2, 2016}}

| dec = {{DEC|+62|13|44}}

| dist_ly = 7.83-8.81 kly
(2.4-2.7 kpc) {{Cite web|title=NGC 366|url=http://sim-id/|access-date=2020-06-10|website=sim-id}}{{Dead link|date=February 2023 |bot=InternetArchiveBot |fix-attempted=yes }}

| constellation name = Cassiopeia

| image = File:NGC 366 PanSTARRS.jpg

| appmag_v =

| size_v =

| notes =

| names = Cr 9, GC 195, h 83, OCL 316{{cite web|title=New General Catalog Objects: NGC 350 - 399|url=http://cseligman.com/text/atlas/ngc3a.htm#366|publisher=Cseligman|access-date=November 25, 2016}}

|image_size=250}}

NGC 366 is an open cluster located in the constellation Cassiopeia. It was discovered on October 27, 1829, by John Herschel. It was described by Dreyer as a "cluster, small."