NGC_1820
NGC_1820
Thực đơn
NGC_1820Liên quan
NGC 1820 NGC 1808 NGC 180 NGC 1850 NGC 1807 NGC 1860 NGC 182 NGC 120Tài liệu tham khảo
WikiPedia: NGC_1820 http://cseligman.com/text/atlas/ngc18.htm#1820 http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC... http://www.docdb.net/show_object.php?id=ngc_1820 https://dso-browser.com/deep-sky/2745/ngc-1820/ope...