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cancer constellation: facts about the crab

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cancer constellation: facts about the crab

cancer, which is latin for crab, is the dimmest of the 13 constellations of the zodiac, having only two stars above the fourth magnitude.the small faint constellation cancer is rich in open clusters and double stars. credit: starry night software locating cancer the crab cancer lies between leo, the lion, and gemini, the twins. it is almost impossible to see cancer as a crab with the naked eye or even binoculars. it looks more like a faint, upside-down y. cancer is visible in the northern hemisphere in the early spring. it can be seen in the southern hemisphere during autumn. the cancer constellation occupies an area of 506 square degrees. right ascension: 9 hours declination: 20 degrees best seen between latitudes 90 degrees and minus 60degrees visibility is best during march at 9 p.m. cancer contains two messier objects, a set of astronomical objects first in 1771 by french astronomer charles messier in 1771. cancer's most famous messier object is m44, also known as the beehive cluster, which is a small star cluster that resembles a swarm of bees. m44 contains about 50 stars, the brightest of which are of the sixth magnitude. ε cnc is the brightest member at magnitude 6.3. praesepe is also one of the larger visible open clusters with an area of 1.5 square degrees, or three times the size of the full moon. the constellation's other messier object, m67, is another open star cluster. β cnc is the brightest star in cancer at mag...