The Ursa Major Galaxy is a neighbor of galaksi bima sakti. Inside the Ursa Mayor there are seven main stars.
The seven stars form a beautiful constellation. This star constellation used to be used by sailors as a benchmark for sailing at night before there was a compass.
Ursa Major Galaxy, Milky Way Neighbor
The definition of a galaxy is actually a massive system that is bound together by the force of gravity. Gravity consists of various stars (neutrons and black holes), gas, to the interstellar medium dust and dark matter.
The Earth we live in is also one of the components in the Milky Way galaxy. Then the Milky Way galaxy also of course has a main star called the Sun.
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of course in universe This expanse does not consist of just one galaxy. Yet there are about 10 of the most famous galaxies.
One of the Milky Way’s neighbors is called Ursa Mayor. This galaxy is quite famous because it has seven main stars that are visible to Earth forming a constellation.
The constellation was used as a benchmark for the direction of fishermen who sailed at night.
The distance between the Milky Way galaxy and Ursa Major is about 10 million light years. Another name for Ursa Major is the big bear.
Constellation Ursa Major
The Ursa Major Galaxy also has another name for the Big Bear. That’s why their constellation is called Polar or Polar Bear.
This constellation is especially useful for navigating to the point where Polari, the north star (Alpha Ursae Minoris is located) is part of popular asterism.
The constellation Polaris or Ursa Major has seven stars that make up it. The stars are Big Dipper or Dubhe (Alpha Ursae Majoris), Merak (Betas UMa), Phecda (Gamma UMa), Megrez (Delta UMa), Alioth (Epsilon UMa), Mizar (Zeta UMa), and Alkaid (Eta UMa).
Alioth – Ursa Major (Epsilon Ursa Major)
The star Alioth is the brightest star in Ursa Mayor and is ranked 31st brightest in the night sky.
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Alioth has a magnitude of 1.76 and is about 81 light years away. The name Alioth comes from the Arabic alyat which means fat sheep’s tail.
It is on the bear’s tail and close to its body. Alioth was first seen in 1896 by a British astronomer named Richard A.
Dubhe – Ursa Major (Alpha Ursa Major)
The next star of the Ursa Major galaxy that forms the constellation is Dubhe. Dubhe’s average magnitude is about 1.79 and 124 light-years from our Solar System.
Dubhe is the second brightest star in Ursa Major. The name Dubhe comes from the Arabic dubb which means bear.
Merak – Ursa Major (Beta Ursa Major)
The name Peacock of this star also comes from the Arabic al-maraqq which means the waist of the bear.
Beta Ursae Majoris is the main sequence star with a distance of 79.9 light years and a brightness magnitude of 1.37.
In fact, Beta Ursae Majoris is 2.7 times larger than the Sun in the Solar System.
Alkaid – Ursa Major (Eta Major)
The Alkaid star in the Ursa Major galaxy is renowned as the hottest star that can be seen without binoculars. The surface temperature of the star reaches 20,000 Kelvin.
Then Alkaid is at its easternmost and has a magnitude range of 1.85 which makes it the third brightest star in the constellation.
Allura – Major Bear (Gamma Ursa Major)
Gamma Ursae Majoris is the lowest star in the Big Dipper. Its traditional name, Phecda comes from the Arabic fakho addub which means bear’s waist.
This star has a magnitude of 2,438 and is 83.2 light years away. The approximate age of Phecda is 300 million years.
Megrez – Ursa Major (Delta Ursa Major)
The star in the Ursa major galaxy is the faintest, with a magnitude of 3,312. Megrez is 58.4 light years from our solar system.
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Even so, Megrez is 14 times more dazzling and 63% more massive than the Sun.
Mizar – Ursa Major (Zeta Ursa Major)
The name Mizar comes from the Arabic mizar which means belt. This star has a magnitude of 2.23 and is 82.8 light years away.
Mizar also became the first double star ever caught on camera by an American photographer named Ohn A. Whipple and astronomer George P. in 1857. This star consists of two amazing binary stars in the galaxy Ursa Major. (R10 / HR-Online / Editor-Ndu)
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