NGC 503
NGC 503
Thực đơn
NGC 503Liên quan
NGC NGC 4993 NGC 4302 NGC 2392 NGC 404 NGC 6822 NGC 4565 NGC 3393 NGC 5238 NGC 4889Tài liệu tham khảo
WikiPedia: NGC 503 http://www.astronomy-mall.com/Adventures.In.Deep.S... http://cseligman.com/text/atlas/ngc5.htm#503 http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC... http://spider.seds.org/ngc/revngcic.cgi?NGC503 http://server1.wikisky.org/starview?object=NGC+503 http://www.wikisky.org/?object=NGC+503 http://www.wikisky.org/?object=NGC+503&img_source=... http://www.wikisky.org/?object=NGC+503&img_source=... http://www.wikisky.org/?object=NGC+503&img_source=...