Chi Cygni, una gigante in lenta agonia - Coelum Astronomia
Schwan (Sternbild): Albireo, Sadr, Schwan, Gliese 777, Deneb, Kokon-Nebel, Cygnus X-1, 61 Cygni, Cygnus A, NGC 6888, HD 188753: Albireo, Sadr, Schwan, ... Chi Cygni, Messier 39, Cygnus X-3, NGC 7008 : Gruppe, Bücher: Amazon.es: Libros
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File:Posizione Chi Cygni.png - Wikimedia Commons
File:Posizione Chi Cygni.png - Wikimedia Commons
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Chi Cygni - Wikipedia
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Chi Cygni - Wikipedia
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Chi Cygni (chi Cyg) visible with the naked eye during August 2015 | freestarcharts.com
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Ji Cygni - Wikipedia, entziklopedia askea.
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