The star has a mass 1.2 times that of the Sun and a radius 25 times solar. Octans constellation is located in the southern hemisphere. It has an apparent magnitude of 5.42 and is approximately 270 light years distant from the Sun. The neighboring constellations are Apus, Chamaeleon, Hydrus, Indus, Mensa, Pavo and Tucana. Sigma Octantis is currently the southern pole star, and is sometimes known by the name Polaris Australis. Its estimated age is the same as the Sun’s, about 4.3 billion years. As viewed from the Equator, there are no circumpolar constellations. to oct OCT + ans, as in quadrans QUADRANT] * * * The constellation is circumpolar to the South Pole – it never sets below the horizon. You also have the option to opt-out of these cookies. Polaris Australis – σ Octantis (Sigma Octantis). Delta Octantis is an orange giant star belonging to the stellar class K2III. It has an apparent magnitude of 7.77 and is 171.93 light years distant from the Sun. It was named after the octant, a navigational instrument. The Southern Cross. They orbit each other with a period of 9.073 days. A southern constellation: a mythological creature that is half human and half horse. The brightest star in the constellation is Nu Octantis, with an apparent magnitude of 3.76. It has an apparent magnitude of 4.14 and is approximately 140 light years distant from the Sun. The star will eventually expand and, in about 100 million years, it will become 15 times larger and 60 times brighter than it is now. In the Southern hemisphere, the Large and Small Magellanic Clouds, two satellite galaxies of our Milky Way galaxy, are visible on most clear, moonless nights throughout the year. It is a very old star, only about 400 million years younger than the Universe itself. (6) 8. The constellation is circumpolar to the South Pole – it never sets below the horizon. It does not have any stars brighter than fourth magnitude or any deep sky objects that are bright enough for observers. (4) 17. These cookies will be stored in your browser only with your consent. Nu Octantis has a binary companion, a K7-M1 class dwarf with a mass 0.5 times solar. Beta Octantis is a white star halfway between the dwarf and subgiant stage of evolution. But opting out of some of these cookies may have an effect on your browsing experience. HD 142022 is another binary system in the constellation. There are no myths associated with the constellation, in part because it is located too far south. The star is a yellow-white giant star belonging to the stellar class F0III. (6) 11. Alpha Octantis is a spectroscopic binary star composed of two F-class giants. [3], As viewed from the North Pole, all fully visible constellations north of the celestial equator are circumpolar, and likewise for constellations south of the celestial equator as viewed from the South Pole. the Octant, a southern constellation that contains the south celestial pole. It isn't in the contiguous United States because they are much further south. There are no meteor showers associated with the constellation. It is mandatory to procure user consent prior to running these cookies on your website.
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