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 1397 2 Cygnus 1397 3 Cygnus 1397 4 Cygnus 1397 5 Cygnus 1397 6 Cygnus 1397 7 Cygnus 1397 8 Cygnus 1397 9 Cygnus 1397 10 Cygnus 1397 11 Cygnus 1397 12 Cygnus 1397 13 Cygnus 1397 14 Cygnus 1397 15 Cygnus 1397 16 Cygnus 1397 17 Cygnus 1397 18 Cygnus 1397 19 Cygnus 1397 20 Cygnus 1397 21 Cygnus 1397 22 Cygnus 1397 23 Cygnus 1397 24 Cygnus 1397 25 Cygnus 1397 26 Cygnus 1397 27 Cygnus 1397 28 Cygnus 1397 1 Delphinus 1397 14 January 4240 15 January 4240 16 January 4240 17 January 4240 18 January 4240 19 January 4240 20 January 4240 21 January 4240 22 January 4240 23 January 4240 24 January 4240 25 January 4240 26 January 4240 27 January 4240 28 January 4240 29 January 4240 30 January 4240 31 January 4240 1 February 4240 2 February 4240 3 February 4240 4 February 4240 5 February 4240 6 February 4240 7 February 4240 8 February 4240 9 February 4240 10 February 4240 11 February 4240 12 February 4240
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