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Cassiopeia Constellation
Constellation Cassiopeia the Mother of Andromeda Star Map

Cassiopeia, the Mother of Andromeda (Cas)

(CASS-ee-uh-PEE-uh)


The Northern constellation of Cassiopeia, the Mother of Andromeda, is best viewed in Fall during the month of November. It's brightest star is Schedar at magnitude 2.24. The boundary of the Cassiopeia constellation contains 14 stars that host known exoplanets.

Cassiopeia is a circumpolar constellation, so is visible year-round in the Northern hemisphere. Conversely, it is not visible in the opposite hemisphere unless you are close to the equator.

      1. Pronunciation:
      2. CASS-ee-uh-PEE-uh
      1. Meaning:
      2. Mother of Andromeda
      1. Genitive:
      2. Cassiopeiae
      1. Abbreviation:
      2. Cas
      1. Constellation Family:
      2. Perseus
      1. Hemisphere:
      2. Northern
      1. Quadrant:
      2. NQ1
      1. Best viewing month*:
      2. November
      1. Circumpolar** (N=northern, S=southern):
      2. N circumpolar
      1. Right Ascension (avg):
      2. 0h 52m
      1. Declination (avg):
      2. 60° 18'
      1. Brightest star:
      2. Schedar  (2.24)
      1. Stars with planets:
      2. 14
      1. X-ray stars:
      2. 3 (pulsars) stars
      1. Gamma-ray stars:
      2. 1 stars


    Brightest Stars in Cassiopeia

    The 10 brightest stars in the constellation Cassiopeia by magnitude.

        1. Star
        2. Magnitude
        3. Spectral class


      Double Stars in Cassiopeia

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

          1. Star system
          2. Magnitudes
          3. Type
          1. Eta Cassiopeiae
          2. 3.5, 7.4
          3. double
          1. Sigma Cassiopeiae
          2. 5.0, 7.2
          3. double


        Star Clusters in Cassiopeia

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

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


          Nebulae in Cassiopeia

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

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


            Galaxies in Cassiopeia

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

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


              Neutron Stars in Cassiopeia

              These are the most well-known neutron stars in the constellation Cassiopeia. 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


                Exoplanets in Cassiopeia

                These are the most notable named exoplanet systems known in the constellation Cassiopeia. 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

                  * 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).