Go Astr☾nomy

Cygnus Constellation
Constellation Cygnus the Swan

Cygnus, the Swan (Cyg)  

(SIG-nus)


The constellation of Cygnus, the Swan, is best viewed in Fall during the month of September. It's brightest star is Deneb at magnitude 1.25. The boundary of the Cygnus constellation contains 85 stars that host known exoplanets.

Red supergiant KY Cygni is the 6th largest known star in the universe at 1,400 times the size of the Sun.

      1. Pronunciation:
      2. SIG-nus
      1. Meaning:
      2. Swan
      1. Genitive:
      2. Cygni
      1. Abbreviation:
      2. Cyg
      1. Asterism:
      2. Northern Cross
      1. Constellation Family:
      2. Hercules
      1. Hemisphere:
      2. Northern
      1. Quadrant:
      2. NQ4
      1. Best viewing month*:
      2. September
      1. Right Ascension (avg):
      2. 20h 36m
      1. Declination (avg):
      2. 49° 35'
      1. Brightest star:
      2. Deneb  (1.25m)
      1. Stars with planets:
      2. 85
      1. Triple star systems:
      2. 5
      1. X-ray stars:
      2. 2 (binary) stars
      1. Pulsars:
      2. 1
      1. Black holes:
      2. Cygnux X1
      1. Other:
      2. Hypergiant

    * For southern latitudes, flip the season listed. For example, if a constellation is listed as best viewed in the summer in the month of July, in the southern hemisphere the constellation would be best viewed in the winter in January and would be upside-down.

    ** Circumpolar constellations are visible year-round in the hemisphere listed (and not at all in the opposite).