a northern circumpolar constellation the great bear

a northern circumpolar constellation the great bear插图

Ursa Major
Ursa Majoris a circumpolar constellation,so is visible year-round in the Northern hemisphere. Ursa Major Constellation (The Great Bear) Probably the best known constellation in the sky,Ursa Major has been written about for thousands of years.

What Constellation is the Great Bear in?

The constellation Ursa Major, the great bear, is visible in the northern hemisphere all year long. It is a large constellation occupying an area of 1,280 square degrees. This makes it the third largest constellation in the night sky. It is one of the best-known constellations and is famous for containing an asterism known as the Big Dipper.

What does the constellation Ursa Major mean?

In Greek Arktos is the word for bear, hence the name Arctic, which means bearish and describes the far northern parts of the earth where the Great Bear constellation dominates the heavens even more than in the northern hemisphere. A very large constellation, Ursa Major is best known for its famous asterism or star grouping, the Big Dipper.

What is a circumpolar star?

Circumpolar stars or constellations daily trace circles around the north celestial pole, without setting or dipping below the horizon. They move in a counterclockwise direction. On any given night, the constellation is visible during a portion of the circle; the rest is traced out when the constellation is hidden in the daylight sky.

What constellations circle around Polaris?

The Polaris, the North Star, is actually a part of the Ursa Minor constellation, and as we’ve discussed the Ursa Major, Ursa Minor, Cassiopeia, Cepheus and Draco constellations can always be seen as circling the Polaris year-round if you are located in the Northern Hemisphere.

What constellation is the North Star in?

It is much less conspicuous than the Big Dipper, but it contains the most important navigational star in our sky, Polaris , the Pole or North Star. From our perspective, Polaris appears to remain in the same location, while all the other stars seem to rotate around it as if it is the center of the universe. Since you will always see Polaris in the same northern location, whenever you look at it and extend your arms out to the side, the front of your body is facing north, and south is behind you; your extended right arm points east and your extended left arm points west. Give it a try! When you experience this, you can understand why the North Star has been of great navigational value down through the ages.

How did Zeus seduce Callisto?

Another legend says Zeus seduced Callisto by taking on the form of Artemis to deceive her. Artemis demanded the strictest chastity from the maidens who followed her hunting through the mountains. In order to save Callisto and Arcas from the wrath of the virgin goddess, Zeus transformed Callisto into the Great Bear and set her in the stars with Arcas, their child, beside her.

What does Ursa Major mean?

In Latin, Ursa Major means “greater she-bear.” In Greek Arktos is the word for bear, hence the name Arctic, which means bearish and describes the far northern parts of the earth where the Great Bear constellation dominates the heavens even more than in the northern hemisphere. A very large constellation, Ursa Major is best known for its famous asterism or star grouping, the Big Dipper.

How to find the Great Bear in the Spring Night Sky?

To find the Great Bear in the Spring night sky, look high overhead and locate the Dipper first, then the three pairs of stars which form the Bear’s paws … this works for the ancient or new way of viewing the Great Bear. The bowl of the Dipper is inverted as if pouring the contents of fresh water down upon an awakening earth. The paws of the Bear are up high as if walking in the heavens.

How to find Polaris?

Polaris can be found by following a line formed by the pointer stars in the bowl of the Big Dipper. Extend this line 6x the distance between the two pointer stars, and you will see the North Star. There are no bright stars in between to cause any confusion. Polaris is the tip of the Little Dipper handle.

How do you tell if a big dipper is ready to scoop up water?

The following graphic shows the position of the Big Dipper in the early evening each season. In the spring the bowl is high above and inverted, pouring water upon the new flowers. In summer the bowl looks as if it is ready to scoop up some cool water with its handle above and its bowl below. In autumn the bowl is right-side-up, ready to catch the falling leaves. In winter the handle points down like an icicle.

What constellation is the bear looking for?

Ursa Major is highest in the sky in the spring and lowest in the autumn, when, according to Indian legends, the Bear is looking for a place to lie down for its winter hibernation. This constellation is a circumpolar constellation, which means it travels closely around the North Star; it is always above the horizon never rising or setting; it can be seen any time of the year, high or low in the sky.

What is the brightest star in the constellation?

The brightest star in the constellation is Alioth with a visual magnitude of 1.77. It is a blue-white subdwarf star located approximately 81 light years from Earth. The second brightest star is Dubhe, a blue-white subgiant star with a magnitude of 1.79. It is located about 123 light years away.

How far away is Ursa Major?

It is located about 123 light years away. Alkaid is the third brightest star with a magnitude of 1.86. It is a blue subgiant star that lies some 101 light years from our solar system. Ursa Major contains seven Messier objects, including a double star, a planetary nebula, an irregular galaxy, and four spiral galaxies.

What do the brightest stars represent?

In Hindu legend the brightest stars represent the Seven Sages and the constellation is known as Saptarshi. The Chinese believed the seven bright stars represented Tseih Sing, the Government, or Pih Tow, the Northern Measure.

Why was the Big Dipper used in the Civil War?

Slaves escaping from the South were told to follow the "drinking gourd" to a better life. This is because the Big Dipper is circumpolar, meaning it can be seen in the North all night long.

What is the name of the constellation that is visible in the Northern Hemisphere?

The constellation Ursa Major , the great bear, is visible in the northern hemisphere all year long. It is a large constellation occupying an area of 1,280 square degrees. This makes it the third largest constellation in the night sky. It is one of the best-known constellations and is famous for containing an asterism known as the Big Dipper.

What is the meaning of the drinking gourd?

Ursa Major is one of the 48 constellations cataloged by the Greek astronomer Ptolemy in the second century. Its name means “the great bear” in Latin. It is one of the oldest constellations in the night sky, …

What is the name of the galaxy with two dark patches?

M82, the Cigar Galaxy, is an edge-on starburst galaxy shaped like a cigar. M97, the Owl nebula, is a planetary nebula with two dark patches that resemble the eyes of an owl. M101, the Pinwheel Galaxy, is a spectacular face-on spiral galaxy with bright spiral arms and dark dust lanes. Ursa Major also contains a number of other dim galaxies …

How many objects are there in Ursa Major?

In the constellation of Ursa Major we find more than fifty of these objects, among which we have galaxies, nebulae and star clusters. So we limit ourselves to four of them, the best known, all members of Charles Messier’s Catalog.

How many stars are there in the asterism?

Here we find three first-magnitude stars ( Alioth, Dubhe, and Benetnash or Alkaid ), and three second-magnitude ( Mizar, Merak and Phekda ), plus Megrez, of third magnitude which are the seven that make up the asterism of the Plough.

What constellation is the Great Bear?

This constellation is identified with the Great Bear from the time of Homer, who already quoted it in his major works, The Iliad and The Odyssey calling it Bear and Cart. In Higinio we read one of the most popular names of the Great Bear, Triones, ie oxen. As there are seven brightest stars of the asterism, it was customary precede seven to the name, hence septem triones (seven oxen) or septentrion, name that received the northerly wind.

Who was Zeus’ wife?

The father of the gods seduced the nymph, and she became pregnant. Upon learning what happened Hera , wife of Zeus, prey of jealousy, turned Calisto into a bear.

What constellation does Arcas go into?

Arcas draws his spear and vows revenge against the gods, and Zeus, preventing the disaster, sends both Castillo and Arcas into the heavens, turning Castillo into the Ursa Major constellation, and Arcas into the Bootes constellation (although in some versions, Arcas is turned into Ursa Minor).

How many circumpolar constellations are there in the Northern Hemisphere?

There are five circumpolar constellations in the northern hemisphere, and three circumpolar constellations in the southern hemisphere:

What is circumpolar constellation?

Circumpolar Constellations Explained. Circumpolar constellations are constellations that never set below the horizon when seen from a particular location on Earth. It circles the north and south celestial poles (hence the name circum, meaning encircling, and polar) without ever dipping below the horizon.

Why are constellations important?

Constellations play an integral part in Greek and Roman mythology and religion. Constellations also served important practical functions as a navigational tool for sailors and travelers as well. This is all possible because there are constellations in the night sky that remain relatively fixed in the sky throughout the years, …

Why was Cepheus important?

Cepheus was actually a very important constellation in ancient times because it contains cepheids, which were used in navigation to measure long distances.

Which constellations are circling the North Star?

Northern Circumpolar Constellations. The Polaris, the North Star, is actually a part of the Ursa Minor constellation, and as we’ve discussed the Ursa Major, Ursa Minor, Cassiopeia, Cepheus and Draco constellations can always be seen as circling the Polaris year-round if you are located in the Northern Hemisphere.

Where is Cepheus located?

We can find Cepheus between Ursa Minor, Draco, and Cassiopeia. It is the 27th largest constellation, so it’s not that small, but its brightest star, Alpha Cephei or Alderamin, is only the 89th brightest star in the night sky.