The constellation is named after Cassiopeia, the queen of Aethiopia. Cassiopeia was the wife of King Cepheus of Aethiopia and mother of Princess Andromeda. Cepheus and Cassiopeia were placed next to each other among the stars, along with Andromeda. Andromeda was then rescued by the hero Perseus, whom she later married.
Is the Cassiopeia A constellation?
Cassiopeia, in astronomy, a constellation of the northern sky easily recognized by a group of five bright stars forming a slightly irregular W. It lies at 1 hour right ascension and 60° north declination. Its brightest star, Shedar (Arabic for “breast”), has a magnitude of 2.2.
Where is the Cassiopeia constellation?
northern hemisphere Cassiopeia constellation is located in the first quadrant of the northern hemisphere (NQ1) and is visible at latitudes between +90° and -20°. It is the 25th largest constellation in the night sky and is best seen during the month of November.
Why is it called a constellation?
Constellation is a Latin word meaning “set with stars”. Before the compass was invented, people used the stars to navigate, mainly when sailing across the ocean. They used a constellation called the Ursa Minor to identify the location of Polaris, also known as the North Star.
How old is Cassiopeia constellation?
Cassiopeia is among the 48 constellations first listed by the Greek astronomer Ptolemy, in the 2nd century CE. Cassiopeia is now among the 88 modern constellations and it is easily recognizable due to its distinctive W shape – formed by five of its brightest stars.
Can we see Cassiopeia?
At this time of year, Cassiopeia can also be seen from tropical and subtropical latitudes in the Southern Hemisphere. From there, the constellation appears low in the north – yet highest in the sky – around 8 p.m. on early December evenings. As for Polaris … from the Southern Hemisphere, its below the horizon.
Is Cassiopeia A galaxy?
It contains more than 100 stars, which vary widely in brightness. Two members of the Local Group of galaxies are in Cassiopeia. NGC 185 is a magnitude 9.2 elliptical galaxy of type E0, 2 million light-years away. Cassiopeia also contains part of the closest galaxy group to our Local Group, the IC 342/Maffei Group.
Why are star different colors?
When matter gets hot enough, it emits visible light. When heated to the same temperature, light bulb filaments, horseshoes, and stars will emit the same characteristic blend of color (or wavelengths) of light. Stars are different colors — white, blue, yellow, orange, and red.