Image via Harvard Map Collection/ Wikimedia Commons. Upside-down Cassiopeia, as depicted on Mercator celestial globe in 1551. As punishment, it’s said, she is chained to a chair and hangs upside-down. On this globe, he represents Cassiopeia as the Queen of Ethiopia, whose vanity was legendary. On old star maps, such as the one drawn by the Flemish cartographer Gerardus Mercator in 1551, Schedar or Alpha Cassiopeiae is depicted as being near the heart of the celestial queen. The star’s name, Schedar, derives from the Arabic word for breast. But, like all stars, it has its own interesting history. Nous partageons également des informations sur lutilisation de notre site avec nos partenaires de médias sociaux, de publicité et danalyse. Educalingo cookies sont utilisés pour personnaliser les annonces et dobtenir des statistiques de trafic web. Schedar in the lore of the skyĪs the brightest star in the constellation Cassiopeia the Queen, Alpha Cassiopeiae doesn’t have any fantastic stories behind it. Synonymes et antonymes de Cassiopeia A et traductions de Cassiopeia A dans 25 langues. Although these three stars were listed with Schedar in the Washington Double Star Catalog, it now appears that all of them may be unrelated and only lie near Schedar along our line of sight from Earth. Schedar was thought to have three stellar companions, all of which are too close to the star to be easily seen. This star, now in the late stages of stellar evolution, is about 45 times the sun’s diameter due to the expansion of its outer layers. It’s believed that Schedar takes approximately 102 days to rotate once, in contrast to about 25 days for our sun. Astronomers classify it as a red giant star, and, like all giants, it rotates slowly on its axis. The star is about four times the mass of our sun, but it is cooler. Despite skywatchers a couple of centuries ago suggesting that the star varied in brightness, modern astronomers have discerned no fluctuations. The star Schedar is 228 light-years away and shines steadily at magnitude 2.2. Schedar, as imaged by the Palomar Observatory Schmidt telescope. Image via IAU/ Sky & Telescope/ Wikimedia Commons. Here, Cassiopeia looks like a W, with Schedar (α Cassiopeiae) pointing towards the Andromeda Galaxy, shown in red at the bottom of the map. Makes a great gift! A map of the constellation Cassiopeia the Queen. The 2021 lunar calendars are here! Order yours before they’re gone. Schedar, the brightest star in Cassiopeia, is located at the W’s bottom-right tip (or the M’s upper-left tip). The bright stars of Cassiopeia trace out an M or W, depending on its position in the sky and your perspective. The best time to see Cassiopeia is during fall and winter evenings, since that’s when the constellation rides highest in the sky.
CASSIOPEIA WIKIPEDIA HOW TO
Going fast! How to find Schedarįrom mid-northern latitudes, Cassiopeia is circumpolar, meaning that it circles endlessly around the north celestial pole, never (or rarely, depending on your latitude) dipping below your horizon. With the help of a star map, this orange-colored star is easy to find and is often used by stargazers to locate the Andromeda Galaxy.ĮarthSky 2022 lunar calendars now available! They make great gifts. Schedar, also known as Alpha (α) Cassiopeiae, is its brightest star. Image via Sadalsuud / Wikimedia Commons.Ĭassiopeia the Queen, a constellation of bright stars in the northern hemisphere, is a well-loved fixture of fall and winter evening skies. It’s at the bottom right when you see Cassiopeia as a W, and at the upper left when you see her as an M. ISBN 0710212879.The constellation Cassiopeia the Queen, with Schedar, its brightest star. There is a constellation called Cassiopeia named after her. Poseidon was still angry with Cassiopeia and wanted to punish her. A hero named Perseus came and rescued Andromeda. The oracle said that they must sacrifice their daughter so they chained Andromeda to a rock. Cassiopeia and her husband Cepheus asked an oracle what to do. He sent floods and a sea monster called Cetus to destroy Ethiopia. When the sea- god Poseidon heard what Cassiopeia had said, he was very angry. One day, Cassiopeia said that her daughter Andromeda was more beautiful than all of the Nereids. She thought that she was better than other people. Cassiopeia was very beautiful but also very arrogant and vain. She was the wife of Cepheus who was king of Ethiopia. Cepheus and Cassiopeia thank Perseus for saving their daughter Andromeda, La Délivrance d'Andromède (1679) Pierre Mignard, LouvreĬassiopeia was a woman in Macedonian mythology.
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