NGC_501
NGC_501
Thực đơn
NGC_501Liên quan
NGC 501 NGC 5084 NGC 5005 NGC 5316 NGC 5033 NGC 5053 NGC 504 NGC 508 NGC 514 NGC 5189Tài liệu tham khảo
WikiPedia: NGC_501 http://cseligman.com/text/atlas/ngc5.htm#501 http://www.klima-luft.de/steinicke/ngcic/persons/m... 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?NGC501 http://server1.wikisky.org/starview?object=NGC+501 http://www.wikisky.org/?object=NGC+501 http://www.wikisky.org/?object=NGC+501&img_source=... http://www.wikisky.org/?object=NGC+501&img_source=... http://www.wikisky.org/?object=NGC+501&img_source=...