Fun facts about zodiac sign cancer4/14/2024 The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 3 main and 7 western edgework forming sides ( illustrated in infobox). The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Cnc". At the (angular) heart of this sector of our celestial sphere is Praesepe (Messier 44), one of the closest open clusters to Earth and a popular target for amateur astronomers.Ĭancer is a medium-sized constellation that is bordered by Gemini to the west, Lynx to the north, Leo Minor to the northeast, Leo to the east, Hydra to the south, and Canis Minor to the southwest. It contains ten stars with known planets, including 55 Cancri, which has five: one super-earth and four gas giants, one of which is in the habitable zone and as such has expected temperatures similar to Earth. Cancer is a medium-size constellation with an area of 506 square degrees and its stars are rather faint, its brightest star Beta Cancri having an apparent magnitude of 3.5. Its name is Latin for crab and it is commonly represented as one. Visible at latitudes between + 90° and − 60°.īest visible at 21:00 (9 p.m.) during the month of March.Ĭancer is one of the twelve constellations of the zodiac and is located in the Northern celestial hemisphere.
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