IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Cygnus
The Swan
OriginAncient
AbbreviationCyg
GenitiveCygni
Pronunciation/ˈsɪɡnəs/ SIG-nəss genitive /ˈsɪɡnaɪ/ SIG-nye
SIG-nus
LocationNorthern Hemisphere
Primary StarDeneb (α Cyg)
Right Ascention 20h 41m Declination +45° 17'
Martian Solar Lag δ(🜨→♂) +0.595 h (35.7 min)
Cygnus, “The Swan” is connected with several myths. In one of the more popular ones, Cygnus is Zeus. To seduce Leda, wife of Tyndareus, king of Sparta, Zeus took the form of a swan. The offspring from this union were Polydeuces and Castor, who are represented by the constellation Gemini, and the beautiful Helen (Helen of Troy).
www.underthesky.com
Cygnus as depicted by Johann Bayer in his Uranometria (1624). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
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1 Cygnus 821 2 Cygnus 821 3 Cygnus 821 4 Cygnus 821 5 Cygnus 821 6 Cygnus 821 7 Cygnus 821 8 Cygnus 821 9 Cygnus 821 10 Cygnus 821 11 Cygnus 821 12 Cygnus 821 13 Cygnus 821 14 Cygnus 821 15 Cygnus 821 16 Cygnus 821 17 Cygnus 821 18 Cygnus 821 19 Cygnus 821 20 Cygnus 821 21 Cygnus 821 22 Cygnus 821 23 Cygnus 821 24 Cygnus 821 25 Cygnus 821 26 Cygnus 821 27 Cygnus 821 28 Cygnus 821 1 Delphinus 821 11 May 3156 12 May 3156 13 May 3156 14 May 3156 15 May 3156 16 May 3156 17 May 3156 18 May 3156 19 May 3156 20 May 3156 21 May 3156 22 May 3156 23 May 3156 24 May 3156 25 May 3156 26 May 3156 27 May 3156 28 May 3156 29 May 3156 30 May 3156 31 May 3156 1 June 3156 2 June 3156 3 June 3156 4 June 3156 5 June 3156 6 June 3156 7 June 3156 8 June 3156
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