But Zeus was spotted by Typhon. Typhon attached and Zeus was utterly dismembered by the creature. While this was happening, the god Bacchus was sitting by banks of the Nile river when he saw the attack. He wanted to escape, but he also wanted to help Zues whom the Typhon was close to killing. Bacchus dove into the water and transformed himself; but his two desires split how his body emerged. He got the tail of a fish due to his desire to run away and the head of a goat with horns so that he could fight the monster and save his master from certain death.
Zeus then used his lightening to strike down the Typhon, injured in its fight with Bacchus. We also get the names of five meteor showers from the constellation. Eventually, the Olympians succeeded and utterly defeated the titans. Capricornus is among the faintest constellations, just brighter than Cancer.
The 40 th largest constellation, Capricornus measures square degrees. It sits among the other constellations of the water genre, including the water-bearer Aquarius, the whale-like sea monster Cetus, the fishes Pisces, and the river Eridanus. To find the arrowhead-shaped Capricornus in the sky, look for the Summer Triangle and make a line from Vega through Altair to the lower southern sky. The tropic of Capricorn — the place where the sun appears overhead at noon on the winter solstice — originally sliced right through its namesake constellation, but the line has since shifted to go through the constellation Sagittarius.
Three bright stars — Alpha-2 Capricorni, Beta Capricorni and Omega Capricorni — form a triangle that makes it easier to pick out the constellation.
The goat's tail is formed by Delta Capricorni, the brightest star in the constellation at magnitude 2. Also known as Deneb Algedi — deneb is Arabic for tail — it is a four-star system with an eclipse that can be seen with the naked eye. The second brightest star — Beta Capricorni, also known as Dabih — is a multiple-star system. Even though Capricornus is one of the faintest constellations in the sky, it is associated with myths and images that date back to the 21st century BCE.
The story of Capricornus originated with the Babylonians and Sumerians. The Greeks associated the constellation with the forest deity Pan, who had the legs and horns of a goat.
Crotus, his son, is usually associated with another amphibious creature, represented by the neighboring constellation Sagittarius. Later, he warned the gods that Typhon, a monster sent by Gaia to fight them, was approaching. He also suggested that gods disguise themselves as animals until the danger passed. In the myth, Pan eluded the monster himself by jumping into the river Nile and turning the lower part of his body into that of a fish. Zeus eventually struck down Typhon with his thunderbolts.
In reference to the myth, Capricornus is still often depicted as a goat with the tail of a fish. In another story, Capricornus is identified as Amalthea, the goat that suckled Zeus when he was an infant, hiding from his father Cronos.
Cronos had devoured his other children, all future gods and goddesses, because of a prophecy that said that he would be overthrown by one of them. Delta Capricorni is the brightest point of light in Capricornus. It is a multiple star system with an apparent magnitude of 2. The primary component Delta Capricorni Aa , formally named Deneb Algedi, is a giant star in an eclipsing binary system. When the giant eclipses the companion, the brightness decreases by 0. The system is classified as an Algol-type variable.
Delta Capricorni A has two visual companions, both significantly fainter. A fifteenth magnitude companion lies about 1 arcminute away and a thirteenth magnitude star is separated by more than two arcminutes from the primary. The primary component has a mass double that of the Sun and a radius of 1. With a surface temperature of 7, K, it shines with 8. Delta Capricorni was found to be a metallic-line star in It is one of the brightest metallic A stars in the sky.
For a time, it was believed to be a Delta Scuti variable, a pulsating star whose brightness varies as it expands and contracts. However, observations with the ROSAT satellite in the early s did not find any evidence of short-period variation. Deneb Algedi lies only 2. Beta Capricorni is a multiple star system located light years away. It is the second brightest point of light in Capricornus.
The Beta Capricorni system is composed of five stars. In binoculars, the system appears as a binary star. The stars are separated by 3. They orbit each other with a period of , years. Beta 1 Capricorni is itself a multiple star system consisting of three stars: Dabih, which is a single star, and a binary pair. Beta 2 Capricorni is also a binary star. It is considerably fainter than Beta 1 , with a visual magnitude of 6. It has a radius 35 times that of the Sun and, with an effective temperature of 4, K, it is times more luminous than the Sun.
The binary pair Beta Capricorni Ab1 and Ab2 has an orbital period of 8. The dominant star is a blue B-type main sequence dwarf. It is separated by only 5 astronomical units 0.
The two stars complete an orbit every 3. The components of Beta 2 Capricorni are a white, class A0 giant and a mercury-manganese star. The giant is 40 times more luminous than the Sun.
The companion lies at a separation of about 3 arcseconds. The two are not physically related. They appear 0.
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