The names and locations for almost all of the Northern Hemisphere constellations followed the ancient Greek traditions. Modern astronomers grouped the southern sky into constellations so that every visible star belongs to a given constellation. See the reference for more details.How are contellations put into certain constellation families?Their neighbors and old stories which have inter-related characters.How are contellations put into certain constellation families?
By human imagination. A few thousand years ago people living under the stars traced patterns in groups of stars and made up stories about heroes, gods, and animals being thrown into the sky. Eventually people realized that as the sun set, different groups were rising at different times of the year and events like annual flooding and start of cold matched the star patterns, eventually dividing the year up into 12 parts.How are contellations put into certain constellation families?In 1928, the International Astronomical Union formally accepted the division of the sky into 88 constellations, with the final list provided 2 years later; each star now falls in only one constellation. The boundaries follow north-south or east-west celestial coordinates (right ascension and declination lines) from the year 1875; because of precession, the current boundaries do not match rounded values of celestial coordinates. See also Astronomical coordinate systems; Precession of equinoxes.
Some of the most familiar patterns in the sky are asterisms rather than constellations. For example, the asterism known as the Big Dipper is part of the constellation Ursa Major. The asterism known as the Great Square of Pegasus has three of its corners in Pegasus but the fourth in Andromeda. The Northern Cross is made of stars in Cygnus.How are contellations put into certain constellation families?
I'm not sure of the exact information you need, but I'm going to another grouping of constellations.
There are three main groupings or families based on their locations or activities.
The CIRCUMPOLAR constellations are the ones that circle the north star and never set below the horizon. The size of the circumpolar circle depends on your latitude. The circle is larger as you get farther from the equator.
The ZODIAC constellations are the ones which the Sun, Moon, and planets pass because the solar system is flat. This band consists of the 12 main zodiac constellations plus Ophiuchus.
The SEASONAL constellations are the ones that change in visibility throughout the year because of the Earth's revolution around the Sun.How are contellations put into certain constellation families?Most of the constellations were drawn up thouands of years ago by early star gazers who made up stories about them. The usual story was tht they were real characters placed there by the gods of Olympus or ancient Rome.
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