NGC 561 (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 561" in Spanish language version.

refsWebsite

Global rank Spanish rank

887^th place

1,190^th place

18^th place

34^th place

caltech.edu (Global: 887^th place; Spanish: 1,190^th place)

ned.ipac.caltech.edu

(en) « Results for object NGC 561 », NASA/IPAC Extragalactic Database (consulté le 3 juin 2022)

harvard.edu (Global: 18^th place; Spanish: 34^th place)

adsabs.harvard.edu

Garcia, A.M. (juillet de 1993). «General study of group membership. II - Determination of nearby groups». Astronomy and Astrophysics Supplement Series. 100 #1: 47-90. Bibcode:1993A&AS..100...47G.