NGC 6559

{{Short description|A Star forming region in the constellation Sagittarius }}

{{Sky|18|09|56.8|-|24|06|23}}

{{ Planetary nebula

| name = NGC 6559

| image = 300px

|caption= NGC 6559 taken by the Danish 1.54-metre telescope located at ESO’s La Silla Observatory.

| type = Nebula

| epoch = J2000

| ra = {{RA|18|09|56.8}}{{cite web|title=NED results for object NGC 6559|url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC%206559&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|work=Extragalactic Database|publisher=NASA/IPAC|access-date=2 May 2013}}

| dec = {{DEC|-24|06|23}}

| dist_ly =

| appmag_v =

| size_v =

| constellation = Sagittarius{{cite news|title=An Anarchic Region of Star Formation|url=http://www.eso.org/public/news/eso1320/|access-date=2 May 2013|newspaper=ESO Press Release}}

| radius_ly =

| absmag_v =

| notes =

| names = ESO 521-40, LBN 28, LBN 007.03-02.26{{cite simbad|title=NGC 6559|accessdate=2 May 2013}}

}}

NGC 6559 is a star-forming region located at a distance of about 5000 light-years from Earth, in the constellation of Sagittarius, showing both emission (red) and reflection (bluish) regions.