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a southern circumpolar constellation that contains the south pole

It has an apparent magnitude of 4.31 and is approximately 279 light years distant from the solar system. These cookies will be stored in your browser only with your consent. The primary component belongs to the spectral class G9V and has a mass 1% less than the Sun. Octans — Constellation List of stars in Octans Abbreviation Oct Genitive Octantis Pronunciation …   Wikipedia, Octans — Nombre Latino Octants Abreviatura Oct …   Wikipedia Español, Octans — [äk′tanz] n. [ModL: see OCTANT] a S constellation containing the celestial pole …   English World dictionary, Octans — Daten des Sternbildes Oktant Deutscher Name Oktant Lateinischer Name Octans Lateinischer Genitiv Octantis Lateinische Abkürzung Oct Rektaszension 0h bis 24h Deklination …   Deutsch Wikipedia, Octans — /ˈɒktænz/ (say oktanz) noun (genitive Octantis /ɒkˈtæntəs/ (say ok tantuhs)) a faint, southern constellation; south celestial pole is situated here. The star name approved by the International Astronomical Union (IAU) is Polaris Australis (Sigma Octantis). The constellation is circumpolar to the South Pole – it never sets below the horizon. Octans is the location of the South Celestial Pole. Delta Octantis is the southern pole star on Saturn. The star is a yellow-white giant star belonging to the stellar class F0III. Octans contains the southern pole star, Sigma Octantis, which is located about a degree away from the South Celestial Pole. Similarly going in the other direction for me M31 is circumpolar: it is in Britain. HD 212301 has the stellar classification of F8V, which makes the star a yellow-white dwarf. You also have the option to opt-out of these cookies. [4], https://en.wikipedia.org/w/index.php?title=Circumpolar_constellation&oldid=985352146, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 October 2020, at 13:15. to oct OCT + ans, as in quadrans QUADRANT] * * * Beta Octantis is a white star halfway between the dwarf and subgiant stage of evolution. All stars with a declination less than A are not circumpolar. The constellation was introduced by the French astronomer Nicolas Louis de Lacaille in the 18th century. Octans contains two stars with known planets and has no Messier objects. The neighboring constellations are Apus, Chamaeleon, Hydrus, Indus, Mensa, Pavo and Tucana. (9) 13. As viewed from the Equator, there are no circumpolar constellations. A southern circumpolar constellation that contains the stellar south pole. Beta Lyrae-type stars are usually in such close orbit that their shapes are distorted by each other’s gravitational forces, and they typically have ellipsoidal shapes. There are no meteor showers associated with the constellation. Its estimated age is the same as the Sun’s, about 4.3 billion years. The star cannot be used in navigation because it is too faint. The star’s estimated age is about 12.1 billion years. Sigma Octantis exhibits a variation of 0.03 magnitudes over a period of 2.3 hours. This website uses cookies to personalise content and ads, and to analyse user traffic. Alpha Octantis is classified as a Beta Lyrae-type eclipsing binary system, one in which variations in luminosity are caused by one component periodically passing in front of the other and blocking its light. A southern constellation: a mythological creature that is half human and half horse. It is one of the least luminous giant stars known, with a luminosity only 16 times that of the Sun. It has the stellar classification of A9IV-V. This category only includes cookies that ensures basic functionalities and security features of the website. Sigma Octantis is 25 times fainter than the North Star, which makes it is too dim to be used for navigation, so it is the Southern Cross, which is usually used for establishing the position of the South Celestial Pole. Polaris Australis – σ Octantis (Sigma Octantis). [1] Due to Earth's rotation and axial tilt with respect to the Sun, the stars and constellations can be divided into two categories. It lies in the fourth quadrant of the southern hemisphere (SQ4) and can be seen at latitudes between +0° and -90°. At the south pole the entire visible sky is circumpolar. The system shares the Mu designation with Mu-1 Octantis, from which it is separated by 50 minutes of arc. The star has a planet orbiting it with a period of 2.24572 days. Octans belongs to the Lacaille family of constellations, along with Antlia, Caelum, Circinus, Fornax, Horologium, Mensa, Microscopium, Norma, Pictor, Reticulum, Sculptor, and Telescopium. An autumn constellation: the Ram. [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. It does not have any stars brighter than fourth magnitude or any deep sky objects that are bright enough for observers. (6) 11. Necessary cookies are absolutely essential for the website to function properly. The stars and constellations that are circumpolar depends on the observer's latitude. (3) 10. Delta Octantis is an orange giant star belonging to the stellar class K2III. This work contains four celestial maps: two polar (extending approximately 23.5 degrees south or south respectively), and two centred on the summer and winter solstices, covering half of the zodiac from equinox to equinox along the ecliptic in an area ranging from 35 degrees north to 35 degrees south. Further north only the more southern constellations are. These stars are used as standard candles for determining the distances to deep sky objects such as globular and open star clusters and the Galactic centre. The star has a mass 1.2 times that of the Sun and a radius 25 times solar. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website.

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