NGC_1971
NGC_1971
Thực đơn
NGC_1971Liên quan
NGC 1971 NGC 1961 NGC 197 NGC 1901 NGC 171 NGC 1910 NGC 1979 NGC 1974 NGC 1931 NGC 1970Tài liệu tham khảo
WikiPedia: NGC_1971 http://cseligman.com/text/atlas/ngc19a.htm#1971 http://spider.seds.org/ngc/ngc.cgi?NGC_1971 http://spider.seds.org/ngc/revngcic.cgi?ngc1971 https://dso-browser.com/deep-sky/2896/ngc-1971/ope...