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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 ...
The Bayer designation Upsilon Cassiopeiae (υ Cas / υ Cassiopeiae) is shared by two star systems, in the constellation Cassiopeia: υ¹ Cassiopeiae; υ² Cassiopeiae; They are separated by 0.3° on the sky. [1]
Lambda Cassiopeiae, Latinized from λ Cassiopeiae, is a binary star system, in the northern constellation of Cassiopeia. The system has a combined apparent magnitude of +4.74, making it faintly visible to the naked eye. With an annual parallax shift of 8.64 mass, [1] it is approximately 380 light years from Earth.
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.
Llys Dôn (literally "The Court of Dôn") is the traditional Welsh name for the constellation Cassiopeia.At least two of Dôn's children also have astronomical associations: Caer Gwydion ("The Castle of Gwydion") is the traditional Welsh name for the Milky Way, and Caer Arianrhod ("The Castle of Arianrhod") being the constellation of Corona Borealis.
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.