NGC 991 (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 991" in Italian language version.

Last modified: 23:11:03, 22 November 2025 (UTC)

Ref.Un. Ref.Website

Global rank Italian rank

81caltech.edu

240^th place

249^th place

51cseligman.com

1,720^th place

500^th place

51astrovalleyfield.ca

low place

1,389^th place

11adsabs.harvard.edu

14^th place

63^rd place

11free.fr

283^rd place

135^th place

11rochesterastronomy.org

low place

9,219^th place

adsabs.harvard.edu (Global: 14^th place; Italian: 63^rd place)

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

astrovalleyfield.ca (Global: low place; Italian: 1,389^th place)

(FR) Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 900 à 999, su astrovalleyfield.ca. URL consultato il 24 settembre 2024.

caltech.edu (Global: 240^th place; Italian: 249^th place)

ned.ipac.caltech.edu

(EN) Results for object NGC 991, su ned.ipac.caltech.edu, National Aeronautics and Space Administration / Infrared Processing and Analysis Center. URL consultato il 24 settembre 2024.

cseligman.com (Global: 1,720^th place; Italian: 500^th place)

(EN) Courtney Seligman, Celestial Atlas Table of Contents, NGC 991, su cseligman.com. URL consultato il 24 settembre 2024.

free.fr (Global: 283^rd place; Italian: 135^th place)

atunivers.free.fr

(FR) Une liste des groupes de galaxies proches, Un Atlas de l'Univers, Richard Powel, su atunivers.free.fr. URL consultato il 24 settembre 2024.

rochesterastronomy.org (Global: low place; Italian: 9,219^th place)

(EN) Other Supernovae images, su rochesterastronomy.org. URL consultato il 24 settembre 2024.

NGC 991 (Italian Wikipedia)

adsabs.harvard.edu (Global: 14th place; Italian: 63rd place)

astrovalleyfield.ca (Global: low place; Italian: 1,389th place)

caltech.edu (Global: 240th place; Italian: 249th place)