NGC 20 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 20" in English language version.

refsWebsite

Global rank English rank

low place

low place

887^th place

714^th place

1books.google.com

3^rd place

3^rd place

18^th place

17^th place

books.google.com (Global: 3^rd place; English: 3^rd place)

Steinicke, W. (2010). Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer's New General Catalogue. Cambridge University Press. pp. 288–289, 301–302. ISBN 978-1-139-49010-8. Retrieved 2025-06-24.

caltech.edu (Global: 887^th place; English: 714^th place)

nedipac.caltech.edu

"NASA/IPAC Extragalactic Database". Results for NGC 0020. Retrieved 2010-05-05.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.

unistra.fr (Global: low place; English: low place)

simbad.cds.unistra.fr

"NGC 20". SIMBAD. Retrieved 2025-06-24.