NGC 2440 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 2440" in English language version.

Last modified: 08:21:25, 30 March 2025 (UTC)

Ref.Un. Ref.Website

Global rank English rank

163^rd place

833^rd place

12^th place

73^rd place

21adsabs.harvard.edu

14^th place

9^th place

low place

low place

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

(James & Marion 2006) James, Renée; Marion, Howie (April 2006), "X-treme Stars of the cosmos", Astronomy, 34 (4): 34–39, Bibcode:2006Ast....34d..34J

nasa.gov (Global: 12^th place; English: 73^rd place)

apod.nasa.gov

(Nemiroff & Bonnell 2007) Nemiroff, R.; Bonnell, J., eds. (February 15, 2007). "Planetary Nebula NGC 2440". Astronomy Picture of the Day. NASA.

skyhound.com (Global: low place; English: low place)

observing.skyhound.com

"Observing at Skyhound: NGC 2440".

u-strasbg.fr (Global: 163^rd place; English: 833^rd place)

simbad.u-strasbg.fr

(SIMBAD 2007) SIMBAD (January 9, 2007), Results for NGC 2440, SIMBAD, Centre de Données Astronomiques de Strasbourg