NGC 13
NGC 13
Thực đơn
NGC 13Liên 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 13 http://nedwww.ipac.caltech.edu/cgi-bin/nDistance?n... http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsear... http://messier.seds.org/more/m031_n206.html http://server1.wikisky.org/starview?object=NGC+13 http://www.wikisky.org/?object=NGC+13 http://www.wikisky.org/?object=NGC+13&img_source=D... http://www.wikisky.org/?object=NGC+13&img_source=H... http://www.wikisky.org/?object=NGC+13&img_source=I... http://www.wikisky.org/?object=NGC+13&img_source=I... http://www.wikisky.org/?object=NGC+13&img_source=R...