Cassiopeia constellation



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A constellation is a group of stars that, when seen from Earth, form a pattern. The stars in the sky are divided into 88 constellations.

The brightest constellation is Crux (the Southern Cross). The constellation with the greatest number of visible stars in it is Centaurus (the Centaur - with 101 stars). The largest constellation is Hydra (The Water Snake) which extends over 3.158% of the sky.

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The 12 Constellations of the zodiac
The zodiac is a band of 12 constellations along the ecliptic.

Aquarius, the water bearer
Aries, the ram
Cancer, the crab
Capricorn, the goat
Gemini, the twins
Leo, the lion
Libra, the scales
Pisces, the fish
Sagittarius, the archer
Scorpius, the scorpion
Taurus, the bull
Virgo, the virgin

The Constellations of the Southern Hemisphere (some are seasonally visible in the Northern Hemisphere):

Apus, the bird of paradise
Ara, the altar
Carina, the ship's keel
Centauras, the centaur
Chamaeleon, the chameleon
Circinus, the compass
Crux, the southern cross
Dorado, the swordfish
Eridanus, the river
Grus, the crane
Hydrus, the water snake
Indus, the Indian
Lepus, the rabbit
Mensa, the table
Musca, the fly
Norma, the surveyor's level
Octans, the octant
Pavo, the peacock
Phoenix, the phoenix
Pictor, the easel
Reticulum, the net
Triangulum Australe, the southern triangle
Tucana, the toucan
Vela, the ship's sails
Volans, the flying fish

The Constellations of the Northern Hemisphere (some are seasonally visible in the Southern Hemisphere):

Andromeda, the princess
Antlia, the pump
Aquila, the eagle
Auriga, the chariot driver
Bootes, the herdsman
Caelum, the chisel
Camelopardalis, the giraffe
Canes Venatici, the hunting dogs
Canis Major, the big dog
Canis Minor, the little dog
Cassiopeia, the queen
Cepheus, the king
Cetus, the whale
Columba, the dove
Coma Berenices, Berenice's hair
Corona Australis, the southern crown
Corona Borealis, cassiopeia constellation the northern crown
Corvus, the crow
Crater, the cup
Cygnus, the swan
Delphinus, the dolphin
Draco, the dragon
Equuleus, the little horse
Fornax, the furnace
Hercules, the hero
Horologium, the clock
Hydra, the water snake
Lacerta, the lizard
Leo Minor, the little lion
Lupus, the wolf
Lynx, the lynx
Lyra, the harp
Microscopium, the microscope
Monoceros, the unicorn
Ophiuchus, the sepent holder
Orion, the hunter
Pegasus, the flying horse
Perseus, the Medusa killer
Pisces Austrinus, the southern fish
Puppis, the ship's stern
Pyxis, the ship's compass
Sagitta, the arrow
Sculptor, the sculptor
Scutum, the shield
Serpens, the snake
Sextans, the sextant
Telescopium, the telescope
Triangulum, the triangle
Ursa Major, the big bear
Ursa Minor, the little bear
Vulpecula, the little fox


CONSTELLATION FAMILY
There are many families of constellations, constellations that are either close to one another in our view of the sky or have some other relationship (for example, depicting figures from a particular ancient myth). Some constellation families include:

  • the Zodiac: 12 constellations are star groupings that lie along the ecliptic (the plane in which most of our Solar System lies). Usually, 12 constellations are listed in the Zodiac, but there is actually a thirteenth constellation that crosses the ecliptic, Ophiuchus (between Scorpio and Sagittarius). The signs of the Zodiac are Capricornus, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius.
  • the Ursa Major Family: 10 constellations circling the northern celestial pole, including Ursa Major (containing the Big Dipper), Ursa Minor (containing Polaris, the northern pole star), Canes Venatici, Boötes, Coma Berenice, Corona Borealis, Camelopardalis, Lynx, Draco, and Leo Minor.
  • the Perseus Family: 9 constellations depicting figures from the myth of Perseus, including Cassiopeia, Cepheus, Andromeda, Perseus, Pegasus, Cetus, Auriga, Lacerta, Triangulum.
  • the Hercules Family: 19 constellations depicting figures from the myth of Heracles, including Hercules, Sagitta, Aquila, Lyra, Cygnus, Vulpecula, Hydra, Sextans, Crater, Corvus, Ophiuchus, Serpens, Scutum, Centaurus, Lupus, Corona Australis, Ara, Triangulum Australe, Crux.
  • the Orion Family: 5 constellations, including Orion (the hunter), Canis Major and Canis Minor (Orion's two gods), Monoceros (the unicorn), Lepus (the hare).
  • the Heavenly Waters (aka the Cosmic Waters): 9 constellations whose names are related to water, including Delphinus, Columba, Equuleus, Vela, Puppis, Eridanus, Piscis Austrinus, Carina, Pyxis,
  • the Bayer Group: 11 Southern Hemisphere constellations depicting animals, named by Johann Bayer in 1603. Includes Hydrus, Dorado, Volans, Apus, Pavo, Grus, Phoenix, Tucana, Indus, Chamaeleon, Musca.
  • the La Caille Family: 13 Southern Hemisphere constellations, named by Nicolas Louis de Lacaille in 1756. Includes Norma, Fornax, Circinus, Telescopium, Microscopium, Sculptor, Caelum, Horologium, Antlia, Pictor, Reticulum, Octans, Mensa.

CAPRICORNUS
[Abbreviation: Cap] Capricornus (the goat) is a constellation of the zodiac. Capricorn is seen along the ecliptic between Sagittarius and Aquarius. The brightest stars in Capricornus are Prima Giedi (Alpha 1 Cap) and Secunda Giedi (Alpha 2 Cap). The globular cluster M30 is in Capricorn.


CASSIOPEIA
Cassiopeia is an easily-seen constellation that is in the far northern sky. It circles the pole star (Polaris) throughout the year and also straddles the Milky Way. The five major stars of Cassiopeia (also known as "The Lady of the Chair") are shaped like a "W" (or an "M," depending on your orientation). All of the stars in Cassiopeia are all less than second magnitude brightness. The brightest star in Cassiopeia is Schedar (alpha CAS), which is a multiple star that is pale rose in color and varies in magnitude from 2.2 to 2.8 magnitudes. The second-brightest, called Caph (beta CAS), is a white star of magnitude 2.4. Cassiopeia contains two open clusters, M52 (magnitude 7.3) and M103 (magnitude 7.4). The strongest radio source, Cassiopeia A, emanates from Cassiopeia; it is the remnant of a supernova which ocurred about A.D. 1660, and is 10,000 light years from us. The constellation Cassiopeia was named for Cassiopeia, the mother of Andromeda (and the wife of Cephus) in Greek mythology.


ERIDANUS
[Abbreviation: Eri] Eridanus (the River) is a southern constellation that is may have been named for the river Nile, the river Euphrates, or for the river of tears wept by the mythical Heliades. Eridanus is located near the constellations Fornax and Lepus. The brightest star in Eridanus, alpha Eri, is Achernar (meaning "end of the river"); it is the 9th brightest star in the sky (magnitude 0.46). The second-brightest, beta Eri, is Cursa (meaning "chair/footstool of Orion" ). The third-brightest, gamma Eri, is Zaurak (meaning "boat" ). The fourth-brightest, delta Eri, is Rana (meaning "frog" ). The fifth-brightest, zeta Eri, is Zibal (part of the "Ostrich's Nest"). Eridanus was one of the original 48 constellations first noted by Ptolemy


GEMINI
[Abbreviation: Gem] Gemini (also known as "The Twins") is one of the constellations of the zodiac, located along the ecliptic between Taurus and Cancer. The brightest stars in Gemini are Castor (a sextuple star - three double stars) and Pollux (a 1st magnitude yellow star). The open cluster M35 is located in Gemini. The Geminid meteor shower seems to radiate from Gemini.


HERCULES
Hercules is a Northern Hemisphere constellation that is the fifth largest in the sky. It is named for Hercules, the legendary hero of Greek mythology. The brightest of its rather dim stars is Ras Algethi (alpha Her), a variable red supergiant. The four stars of the central trapezoid within Hercules, epsilon Her, zeta Her, eta Her and pi Her, form the asterism called Keystone. The globular star cluster M13 is located on the western part of the Keystone. The Tau Herculid meteor shower seems to radiate from Hercules.


LEO
[Abbreviation: Leo] Leo (the lion) is a constellation of the zodiac that is shaped like a lion. Leo is seen along the Milky Way in the Northern Hemisphere along the ecliptic between Virgo and Cancer. The brightest star (Alpha Leo) in Leo is Regulus (meaning "little king"). The second-brightest star (Beta Leo) is Denebola (meaning "tail of the lion"), and the third-brightest star (Gamma 1 Leo) is Algieba (meaning "forehead"). The spiral galaxies M65, M66, M95, M96, and the elliptical galaxy M105 are nearby.


Источник: http://www.enchantedlearning.com/subjects/astronomy/stars/constellations.shtml


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