Go-astronomy logo

Cygnus Constellation
Constellation Cygnus the Swan Star Map

Cygnus, the Swan (Cyg)

(SIG-nus)


The Northern 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  (1.25)
      1. Stars with planets:
      2. 85
      1. X-ray stars:
      2. 2 (binary) stars


    Brightest Stars in Cygnus

    The 10 brightest stars in the constellation Cygnus by magnitude.

        1. Star
        2. Magnitude
        3. Spectral class


      Double Stars in Cygnus

      These are the brightest and easiest-to-find double, triple, and quadruple star systems in the constellation Cygnus. Also see all star clusters.

          1. Star system
          2. Magnitudes
          3. Type
          1. Beta Cygni
          2. 3.2, 4.7
          3. double
          1. 31 Cygni
          2. 3.9, 7.0, 4.8
          3. triple
          1. 61 Cygni
          2. 5.2, 6.1
          3. double


        Star Clusters in Cygnus

        The most notable and easy-to-find star clusters in the constellation Cygnus . Also see all star clusters.

            1. Star cluster
            2. Catalog #
            3. Cluster type


          Nebulae in Cygnus

          Notable and easy-to-find nebulae in the constellation Cygnus . Also see all nebulae.

              1. Nebula name
              2. Catalog #
              3. Nebula type


            Galaxies in Cygnus

            The most notable, famous, and easy-to-find galaxies in the constellation Cygnus. Also see all galaxies.

                1. Galaxy name
                2. Alt name
                3. Galaxy type


              Neutron Stars in Cygnus

              These are the most well-known neutron stars in the constellation Cygnus. Although neutron stars cannot be seen in any amateur telescope, they are at the center of many supernova remnant nebulae, which can be seen. Also see all neutron stars.

                  1. Neutron star
                  3. Type


                Black Holes in Cygnus

                These are the most well-known smaller (non-supermassive) black holes in the constellation Cygnus. Although black holes cannot be seen directly, the smaller ones are at the center of some star clusters and supernova remnant nebulae, which can be seen. Supermassive black holes are at the center of most galaxies, such as Sagittarius A* at the center of our Milky Way galaxy. Also see all black holes.

                    1. Black hole
                    3. Type
                    1. Cygnus X-1
                    3. stellar
                    1. Cygnus X-3
                    3. stellar
                    1. V404 Cyg
                    3. stellar


                  Exoplanets in Cygnus

                  These are the most notable named exoplanet systems known in the constellation Cygnus. Bear in mind that we will likely discover billions of exoplanets in the years to come. Also see all exoplanets.

                      1. Host star name
                      3. Exoplanet name

                    * Constellation shown for northen hemisphere skies. For the southern hemisphere, constellations appear rotated 180 degrees (upside-down and left-right reversed) from what is shown. Remember that seasons are reversed too - summer in northern latitudes is winter in southern latitudes.

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