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Cancer Constellation
Constellation Cancer the Crab Star Map

Cancer, the Crab (Cnc)


The Northern constellation of Cancer, the Crab, is best viewed in Spring during the month of March. It's brightest star is Altarf at magnitude 3.53. The boundary of the Cancer constellation contains 10 stars that host known exoplanets.

      1. Pronunciation:
      2. CAN-ser
      1. Meaning:
      2. Crab
      1. Genitive:
      2. Cancri
      1. Abbreviation:
      2. Cnc
      1. Constellation Family:
      2. Zodiacal
      1. Hemisphere:
      2. Northern
      1. Quadrant:
      2. NQ2
      1. Best viewing month*:
      2. March
      1. Right Ascension (avg):
      2. 8h 30m
      1. Declination (avg):
      2. 23° 34'
      1. Brightest star:
      2. Altarf  (3.53)
      1. Stars with planets:
      2. 10

    Brightest Stars in Cancer

    The 10 brightest stars in the constellation Cancer by magnitude.

        1. Star
        2. Magnitude
        3. Spectral class

      Double Stars in Cancer

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

          1. Star system
          2. Magnitudes
          3. Type
          1. Zeta Cancri
          2. 5.3, 5.9
          3. double
          1. Iota Cancri
          2. 4.1, 6.0
          3. double

        Star Clusters in Cancer

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

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

          Exoplanets in Cancer

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

              1. Host star name
              2. 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).