Fixed bounds of the constellation Cygnus. Asterism swan; Alpha NE crowns stretched symm. wings (to Iota (by Kappa & Theta) via Omicron1&2 or to Zeta via Nu. Underwing: Epsilon, Delta, Gamma axis linking Alpha to far Beta via Eta, Chi, Phi
Cygnus (constellation) (Wikipedia)Cygnus is a northern constellation on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. Cygnus is one of the most recognizable constellations of the northern summer and autumn, and it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.