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Cancer Constellation
Constellation Cancer

Cancer, the Crab (Cnc)

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

The naked eye can generally see up to magnitude 6 (magnitude 8 with perfect eyes under ideal super dark-sky conditions).

      1. Meaning:
      2. Crab
      1. Genitive:
      2. Cancri
      1. Abbreviation:
      2. Cnc
      1. Constellation Family:
      2. Zodiacal
      1. Best Viewing Month*:
      2. March
      1. Right Ascension (avg):
      2. 8h 30m
      1. Declination (avg):
      2. 23° 34'
      1. Brightest Star:
      2. Altarf (3.53m)
      1. Exoplanet Host Stars:
      2. 10
      1. Quadruple Stars:
      2. 1
      1. Caldwell objects:
      2. C48,
      1. Pulsars:
      2. 1
      1. Other:
      2. Technetium star

    * 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.

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