NGC 57 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 57" in English language version.

refsWebsite

Global rank English rank

5,388^th place

7,494^th place

887^th place

714^th place

low place

low place

1rochesterastronomy.org

low place

low place

18^th place

17^th place

caltech.edu

nedipac.caltech.edu

"NASA/IPAC Extragalactic Database". Results for NGC 57. Retrieved 2006-12-22.

cseligman.com

"New General Catalog Objects: NGC 50 - 99". cseligman.com. Retrieved 2017-12-18.

harvard.edu

cbat.eps.harvard.edu

Cbet 2820 del 20 settembre 2011

rochesterastronomy.org

David Bishop. "Latest Supernovae". supernovae.net (International Supernovae Network). Retrieved 2010-06-04.

seds.org

spider.seds.org

"Revised NGC Data for NGC 57". spider.seds.org. Retrieved 2017-12-18.