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Cassiopeia (listen ⓘ) is a constellation and asterism in the northern sky named after the vain queen Cassiopeia, mother of Andromeda, in Greek mythology, who boasted about her unrivaled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy , and it remains one of the 88 modern constellations today.
Poseidon's punishment: Cassiopeia as a constellation sitting in the heavens tied to a chair. Hyginus, Poeticon Astronomicon. "U.S. Naval Observatory Library" Cassiopeia (/ ˌ k æ s i. oʊ ˈ p iː. ə /; [1] Ancient Greek: Κασσιόπεια Kassiópeia, Modern Greek: Κασσιόπη Kassiópē) or Cassiepeia (Κασσιέπεια Kassiépeia), a figure in Greek mythology, was Queen of ...
Alpha Cassiopeiae or α Cassiopeiae, also named Schedar (/ ˈ ʃ ɛ d ɑːr /), [10] [11] is a second-magnitude star in the northern constellation of Cassiopeia.Though listed as the "alpha star" by Johann Bayer, α Cas's visual brightness closely matches the 'beta' (β) star in the constellation (Beta Cassiopeiae) and it may appear marginally brighter or dimmer, depending on which passband is ...
Zeta Cassiopeiae, Latinized from ζ Cassiopeiae, and officially named Fulu / ˈ f uː l uː /, [11] is a variable star [10] in the constellation of Cassiopeia.It has a blue-white hue and is classified as a B-type subgiant with an apparent magnitude of +3.66, making it visible to the naked eye.
Theta Cassiopeiae or θ Cassiopeiae is a solitary [3] star in the northern constellation of Cassiopeia.It shares the traditional name Marfak / ˈ m ɑːr f æ k / with μ Cassiopeiae, positioned less than half a degree to the WSW, [11] which is derived from the Arabic term Al Marfik or Al Mirfaq (المرفق), meaning "the elbow". [12]
Eta Cassiopeiae (η Cassiopeiae, abbreviated Eta Cas, η Cas) is a binary star system in the northern constellation of Cassiopeia. Its binary nature was first discovered by William Herschel in August 1779. Based upon parallax measurements, the distance to this system is 19.42 light-years (5.95 parsecs) from the Sun. [1]
Kappa Cassiopeiae and its bow shock. Spitzer infrared image (NASA/JPL-Caltech). Kappa Cassiopeiae (κ Cas, κ Cassiopeiae) is a star in the constellation Cassiopeia.. κ Cassiopeiae has an unusual spectrum that has anomalously weak nitrogen lines, taken as an actual nitrogen deficiency in the atmosphere.
Epsilon Cassiopeiae or ε Cassiopeiae, officially named Segin (/ ˈ s ɛ ɡ ɪ n /), [10] [11] is a single [12] star in the northern constellation of Cassiopeia.With an apparent visual magnitude of 3.4, this is one of the brightest stars in the constellation.