![]() ![]() The three-letter abbreviation, adopted by the International Astronomical Union (IAU) in 1922, is Cas.Ĭassiopeia belongs to the Perseus family of constellations, along with Andromeda, Auriga, Cepheus, Cetus, Lacerta, Pegasus, Perseus, and Triangulum.Ĭassiopeia has three stars with known planets and contains two Messier objects: M103 (NGC 581) and M52 (NGC 7654). The genitive form of Cassiopeia, used in star names, is Cassiopeiae (pronunciation: /ˌkæsioʊˈpiːiː/). In English, the constellation is known as Cassiopeia or the Seated Queen. ![]() The constellation name Cassiopeia is pronounced /ˌkæsioʊˈpiːə/. The neighboring constellations are Andromeda, Camelopardalis, Cepheus, Lacerta, and Perseus. It lies in the first quadrant of the northern hemisphere (NQ1) and can be seen at latitudes between +90° and -20°. Facts, location and mapĬassiopeia is the 25th largest constellation in the night sky, occupying an area of 598 square degrees. The constellation was first catalogued by the Greek astronomer Ptolemy in the 2nd century, along with other constellations in the Perseus family (except Lacerta).Ĭassiopeia contains several notable deep sky objects, among them the open clusters Messier 52 and Messier 103, the Heart Nebula and the Soul Nebula, the supernova remnant Cassiopeia A, the star-forming cloud popularly known as the Pacman Nebula, and the White Rose Cluster. Nicknamed the W constellation, Cassiopeia is easily recognizable for the prominent W asterism formed by its five brightest stars. It was named after Cassiopeia, the vain and boastful queen in Greek mythology. ![]() True scientific astronomy has its roots in the attempts of ancient astrologers to predict future occurrences of, for instance, imperial Jupiter and the blood-red planet Mars meeting within the charging bull of Taurus - a potentially powerful omen for those who believed the planets represented the gods themselves.Cassiopeia is a large constellation located in the northern sky. It was reasoned that these zodiacal constellations must be special to make up this path, and the relative positions of the "wandering stars" within them bore great importance. ![]() Since ancient times, the Sun, Moon, and planets have been known as special astronomical objects - they "wander" through the background stars of the zodiac, which remain fixed with respect to each other. The significance of the zodiac stems from the fact that the ecliptic - the narrow path on the sky that the Sun, Moon, and planets appear to follow - runs directly through these star groupings. Though many people start their days by checking their horoscope in the newspaper, the 12 constellations of the zodiac are no more important to astronomers than the other 76 constellations. How do the signs of the zodiac relate to astronomy? To clear up the confusion, names and boundaries were "officially" assigned to 88 constellations by the International Astronomical Union in 1930, providing complete coverage of the entire sky. In fact, by the 19th century the night sky had become crowded with overlapping and often contradictory constellation boundaries and names as different schools of astronomy prepared their own versions of star maps. Of course, many of the constellation names are more modern - Telescopium, the telescope, being a rather obvious newcomer. Orion, the hunter, bears a Greek name, but had been seen as a hunter-hero figure since the times of ancient Babylon. refer to the star group as "Ip," the scorpion king. Scorpius, for instance, was given its name from the Latin word for scorpion, but ancient Egyptian hieroglyphs from before 3000 B.C. Most constellation names are Latin in origin, dating from the Roman empire, but their meanings often originated in the distant past of human civilization. How did the constellations get their names? ![]()
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