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At a distance of 2. Sirius is gradually moving closer to the Solar System, so it is expected to increase in brightness slightly over the next 60, years, reaching a peak magnitude of After that time, its distance will begin to increase, and it will become fainter, but it will continue to be the brightest star in the Earth's night sky for approximately the next , years, before Vega, another A-type star more luminous than Sirius becomes the brightest star.

It is 25 times as luminous as the Sun, [13] but has a significantly lower luminosity than other bright stars such as Canopus or Rigel. The system is between and million years old. The more massive of these, Sirius B, consumed its hydrogen fuel and became a red giant before shedding its outer layers and collapsing into its current state as a white dwarf around million years ago. Sirius is known colloquially as the " Dog Star ", reflecting its prominence in its constellation , Canis Major the Greater Dog.

The brightest star in the night sky, Sirius is recorded in some of the earliest astronomical records. Its displacement from the ecliptic causes its heliacal rising to be remarkably regular compared to other stars, with a period of almost exactly This rising occurs at Cairo on 19 July Julian , placing it just before the onset of the annual flooding of the Nile during antiquity. The ancient Greeks observed that the appearance of Sirius as the morning star heralded the hot and dry summer and feared that the star caused plants to wilt, men to weaken, and women to become aroused.

To Greek observers, this signified emanations that caused its malignant influence. It was described as "burning" or "flaming" in literature. If it rose clear, it would portend good fortune; if it was misty or faint then it foretold or emanated pestilence. Coins retrieved from the island from the 3rd century BC feature dogs or stars with emanating rays, highlighting Sirius's importance.

Bright stars were important to the ancient Polynesians for navigation of the Pacific Ocean. Its culmination at the winter solstice was marked by celebration in Hawaii , where it was known as Ka'ulua , "Queen of Heaven". Many other Polynesian names have been recorded, including Tau-ua in the Marquesas Islands , Rehua in New Zealand, and Ta'urua-fau-papa "Festivity of original high chiefs" and Ta'urua-e-hiti-i-te-tara-te-feiai "Festivity who rises with prayers and religious ceremonies" in Tahiti.

In , Edmond Halley discovered the proper motion of the hitherto presumed "fixed" stars [36] after comparing contemporary astrometric measurements with those from the second century AD given in Ptolemy's Almagest. The bright stars Aldebaran , Arcturus and Sirius were noted to have moved significantly; Sirius had progressed about 30 arcminutes about the diameter of the Moon to the southwest.

In , Sirius became the first star to have its velocity measured, the beginning of the study of celestial radial velocities. Sir William Huggins examined the spectrum of the star and observed a red shift. In his book, Cosmotheoros , Christiaan Huygens estimated the distance to Sirius at 27, times the distance from the Earth to the Sun about 0. Scottish astronomer Thomas Henderson used his observations made in — and South African astronomer Thomas Maclear 's observations made in —, to determine that the value of the parallax was 0.

In , the German astronomer Friedrich Wilhelm Bessel deduced from changes in the proper motion of Sirius that it had an unseen companion. The visible star is now sometimes known as Sirius A. Since , some apparent orbital irregularities in the Sirius system have been observed, suggesting a third very small companion star, but this has never been confirmed.

The best fit to the data indicates a six-year orbit around Sirius A and a mass of 0. This star would be five to ten magnitudes fainter than the white dwarf Sirius B, which would make it difficult to observe. An apparent "third star" observed in the s is now believed to be a background object. In , Walter Sydney Adams , using a inch 1. Twiss in at Jodrell Bank using their stellar intensity interferometer. The 1st-century poet Marcus Manilius described it as "sea-blue", as did the 4th-century Avienius.

In , German astronomers Wolfhard Schlosser and Werner Bergmann published an account of an 8th-century Lombardic manuscript, which contains De cursu stellarum ratio by St. Gregory of Tours. The Latin text taught readers how to determine the times of nighttime prayers from positions of the stars, and a bright star described as rubeola —"reddish" was claimed to be Sirius. The authors proposed this was further evidence Sirius B had been a red giant at the time.

Gregory had been referring to Arcturus. The possibility that stellar evolution of either Sirius A or Sirius B could be responsible for this discrepancy has been rejected by astronomers on the grounds that the timescale of thousands of years is much too short and that there is no sign of the nebulosity in the system that would be expected had such a change taken place.

To the naked eye, it often appears to be flashing with red, white, and blue hues when near the horizon. In , a massive star cluster was discovered only 10 arcminutes from Sirius, making the two appear to be visually close to one other when viewed from the point of view of the Earth. It was discovered during a statistical analysis of Gaia data. The cluster is over a thousand times further away from us than the star system, but given its size it still appears at magnitude 8.

From the Southern Hemisphere in early July, Sirius can be seen in both the evening where it sets after the Sun and in the morning where it rises before the Sun. Sirius can be observed in daylight with the naked eye under the right conditions. Ideally, the sky should be very clear, with the observer at a high altitude, the star passing overhead, and the Sun low on the horizon. These observing conditions are more easily met in the Southern Hemisphere, owing to the southerly declination of Sirius.

The orbital motion of the Sirius binary system brings the two stars to a minimum angular separation of 3 arcseconds and a maximum of 11 arcseconds. At the closest approach, it is an observational challenge to distinguish the white dwarf from its more luminous companion, requiring a telescope with at least mm 12 in aperture and excellent seeing conditions. After a periastron occurred in , [c] the pair moved apart, making them easier to separate with a telescope. Note that Canopus may be a bright giant [80] It is still around 25 times more luminous than the Sun.

Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [e] roughly the distance between the Sun and Uranus and a period of The brighter component, termed Sirius A, is a main-sequence star of spectral type early A, with an estimated surface temperature of 9, K.

Currently 10, times less luminous in the visual spectrum, Sirius B was once the more massive of the two. Early in its life, it is thought to have been two bluish-white stars orbiting each other in an elliptical orbit every 9.

This might be an indication of dust in the system, which is considered somewhat unusual for a binary star. In , Vigan and colleagues used the VLT Survey Telescope to search for evidence of substellar companions, and were able to rule out the presence of giant planets 11 times more massive than Jupiter at 0. Sirius A has a mass of 2.

Stellar models suggest that the star formed during the collapsing of a molecular cloud and that, after 10 million years, its internal energy generation was derived entirely from nuclear reactions. The core became convective and used the CNO cycle for energy generation.

Sirius A is classed as an Am star because the spectrum shows deep metallic absorption lines , [94] indicating an enhancement of its surface layers in elements heavier than helium, such as iron. The high surface content of metallic elements is unlikely to be true of the entire star; rather the iron-peak and heavy metals are radiatively levitated towards the surface.

Sirius B is one of the most massive white dwarfs known. With a mass of 1. This mass is packed into a volume roughly equal to the Earth's. A white dwarf forms after a star has evolved from the main sequence and then passed through a red giant stage. This occurred when Sirius B was less than half its current age, around million years ago.

Given its extremely high mass, it is likely that Sirius B could have started out as a B-type star much heavier than the sun. While it passed through the red giant stage, Sirius B may have enriched the metallicity of its companion, explaining the very high metallicity of Sirius A. This star is primarily composed of a carbon—oxygen mixture that was generated by helium fusion in the progenitor star.

Since , irregularities have been observed in the orbits of Sirius A and B with an apparent periodicity of 6—6. A study concluded that such a companion likely exists, with a mass of roughly 0. More recent and accurate astrometric observations by the Hubble Space Telescope ruled out the existence of such a Sirius C entirely.

The study predicted an astrometric movement of roughly 90 mas 0. This ruled out any objects orbiting Sirius A with more than 0. The study was also able to rule out any companions to Sirius B with more than 0.

Effectively, there are almost certainly no additional bodies in the Sirius system larger than a small brown dwarf or large exoplanet. In , Ejnar Hertzsprung was the first to suggest that Sirius was a member of the Ursa Major Moving Group , based on his observations of the system's movements across the sky.

The Ursa Major Group is a set of stars that share a common motion through space. It was once a member of an open cluster , but has since become gravitationally unbound from the cluster. The other two are the Hyades and the Pleiades , and each of these clusters consists of hundreds of stars. Sirius has over 50 other designations and names attached to it. This name is widely used on medieval astrolabes from Western Europe. As Mrgavyadha, the star represents Rudra Shiva. Its astrological symbol was listed by Heinrich Cornelius Agrippa.

Many cultures have historically attached special significance to Sirius, particularly in relation to dogs. Canis Major was classically depicted as Orion 's dog. The Ancient Greeks thought that Sirius's emanations could affect dogs adversely, making them behave abnormally during the "dog days", the hottest days of the summer.

The Romans knew these days as dies caniculares , and the star Sirius was called Canicula, "little dog". The excessive panting of dogs in hot weather was thought to place them at risk of desiccation and disease. In extreme cases, a foaming dog might have rabies, which could infect and kill humans they had bitten.

Sirius rises late in the dark, liquid sky On summer nights, star of stars, Orion's Dog they call it, brightest Of all, but an evil portent, bringing heat And fevers to suffering humanity. In Iranian mythology, especially in Persian mythology and in Zoroastrianism , the ancient religion of Persia , Sirius appears as Tishtrya and is revered as the rain-maker divinity Tishtar of New Persian poetry.

Beside passages in the sacred texts of the Avesta , the Avestan language Tishtrya followed by the version Tir in Middle and New Persian is also depicted in the Persian epic Shahnameh of Ferdowsi. Because of the concept of the yazatas , powers which are "worthy of worship", Tishtrya is a divinity of rain and fertility and an antagonist of apaosha , the demon of drought. In this struggle, Tishtrya is depicted as a white horse. Several cultures also associated the star with a bow and arrows.

The ancient Chinese visualized a large bow and arrow across the southern sky, formed by the constellations of Puppis and Canis Major. In this, the arrow tip is pointed at the wolf Sirius. A similar association is depicted at the Temple of Hathor in Dendera , where the goddess Satet has drawn her arrow at Hathor Sirius.

Known as "Tir", the star was portrayed as the arrow itself in later Persian culture. From there is it sent via the Sun to the god of Earth Sanat Kumara , and finally through the seven Masters of the Seven Rays to the human race. The midnight culmination of Sirius in the northern hemisphere coincides with the beginning of the New Year [] of the Gregorian Calendar during the decades around the year Over the years, its midnight culmination moves slowly, owing to the combination of the star's proper motion and the precession of the equinoxes.

At the time of the introduction of the Gregorian calendar in the year , its culmination occurred 17 minutes before midnight into the new year under the assumption of a constant motion. According to Richard Hinckley Allen [] its mightnight culmination was celebrated at the Temple of Demeter at Eleusis. The Dogon people are an ethnic group in Mali , West Africa, reported by some researchers to have traditional astronomical knowledge about Sirius that would normally be considered impossible without the use of telescopes.

According to Marcel Griaule , they knew about the fifty-year orbital period of Sirius and its companion prior to western astronomers. Doubts have been raised about the validity of Griaule and Dieterlein's work. All agree, however, that they learned about the star from Griaule. In his pseudoarcheology book The Sirius Mystery , Robert Temple claimed that the Dogon people have a tradition of contact with intelligent extraterrestrial beings from Sirius.

In the religion of the Serer people of Senegal , the Gambia and Mauritania , Sirius is called Yoonir from the Serer language and some of the Cangin language speakers, who are all ethnically Serers. The star Sirius is one of the most important and sacred stars in Serer religious cosmology and symbolism. The Serer high priests and priestesses Saltigues , the hereditary "rain priests" [] chart Yoonir in order to forecast rainfall and enable Serer farmers to start planting seeds.

In Serer religious cosmology, it is the symbol of the universe. Sirius features on the coat of arms of Macquarie University , and is the name of its alumnae journal. Sirius is a frequent subject in science fiction and related popular culture. Composer Karlheinz Stockhausen , who wrote a piece called Sirius , is claimed to have said on several occasions that he came from a planet in the Sirius system.

Astronomer Noah Brosch has speculated that the name of the character Sirius Black from the Harry Potter stories, who has a unique ability to transform into a black dog, might have been inspired by "Sirius B". Coordinates : 06 h 45 m From Wikipedia, the free encyclopedia. Star in the constellation Canis Major and brightest star in the night sky. Several terms redirect here. Main article: Gaia 1. Play media. See also: Winter Triangle. See also: Nommo. Main articles: Serer religion and Saltigue.

See also: Sirius in fiction. The goddess Sopdet was later syncretized with the goddess Isis , Sah was linked with Osiris , and Sopdu was linked with Horus. The day period of the absence of Sirius from the sky was understood as the passing of Sopdet-Isis and Sah-Osiris through the Egyptian underworld.

Random House, Inc. Retrieved 6 April November , "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 2 : —, arXiv : Bright Star Catalogue 5th Revised Ed. Preliminary Version ed. Bibcode : bsc.. Astronomy and Astrophysics. Monthly Notices of the Royal Astronomical Society. S2CID The Astrophysical Journal.

Bibcode : ApJ Bibcode : AJ VizieR Online Data Catalog. Bibcode : yCat Astronomy Letters. Bibcode : AstL ISSN Gaia collaboration Proceedings of the International Astronomical Union. Poprad, Slovakia: Cambridge University Press. Bibcode : IAUS.. Measurement of v sin i in the southern hemisphere". Star-names and Their Meanings. New York: G.

Annals of the New York Academy of Sciences. Encyclopaedia of Hinduism, A Continuing Series. Anmol Publications PVT. ISBN The Kanji dictionary. Tuttle language library. Tuttle Publishing. Retrieved 20 October Retrieved 23 October The Brightest Stars. Sky and Telescope. Fasti IV, lines — The Journal of the Polynesian Society. JSTOR The distance between the two varies between 8. Sirius appears bright because of its intrinsic luminosity and its proximity to the Solar System.

At a distance of 2. Sirius is gradually moving closer to the Solar System, so it is expected to increase in brightness slightly over the next 60, years, reaching a peak magnitude of After that time, its distance will begin to increase, and it will become fainter, but it will continue to be the brightest star in the Earth's night sky for approximately the next , years, before Vega, another A-type star more luminous than Sirius becomes the brightest star.

It is 25 times as luminous as the Sun, [13] but has a significantly lower luminosity than other bright stars such as Canopus or Rigel. The system is between and million years old. The more massive of these, Sirius B, consumed its hydrogen fuel and became a red giant before shedding its outer layers and collapsing into its current state as a white dwarf around million years ago.

Sirius is known colloquially as the " Dog Star ", reflecting its prominence in its constellation , Canis Major the Greater Dog. The brightest star in the night sky, Sirius is recorded in some of the earliest astronomical records. Its displacement from the ecliptic causes its heliacal rising to be remarkably regular compared to other stars, with a period of almost exactly This rising occurs at Cairo on 19 July Julian , placing it just before the onset of the annual flooding of the Nile during antiquity.

The ancient Greeks observed that the appearance of Sirius as the morning star heralded the hot and dry summer and feared that the star caused plants to wilt, men to weaken, and women to become aroused. To Greek observers, this signified emanations that caused its malignant influence. It was described as "burning" or "flaming" in literature.

If it rose clear, it would portend good fortune; if it was misty or faint then it foretold or emanated pestilence. Coins retrieved from the island from the 3rd century BC feature dogs or stars with emanating rays, highlighting Sirius's importance. Bright stars were important to the ancient Polynesians for navigation of the Pacific Ocean. Its culmination at the winter solstice was marked by celebration in Hawaii , where it was known as Ka'ulua , "Queen of Heaven". Many other Polynesian names have been recorded, including Tau-ua in the Marquesas Islands , Rehua in New Zealand, and Ta'urua-fau-papa "Festivity of original high chiefs" and Ta'urua-e-hiti-i-te-tara-te-feiai "Festivity who rises with prayers and religious ceremonies" in Tahiti.

In , Edmond Halley discovered the proper motion of the hitherto presumed "fixed" stars [36] after comparing contemporary astrometric measurements with those from the second century AD given in Ptolemy's Almagest. The bright stars Aldebaran , Arcturus and Sirius were noted to have moved significantly; Sirius had progressed about 30 arcminutes about the diameter of the Moon to the southwest. In , Sirius became the first star to have its velocity measured, the beginning of the study of celestial radial velocities.

Sir William Huggins examined the spectrum of the star and observed a red shift. In his book, Cosmotheoros , Christiaan Huygens estimated the distance to Sirius at 27, times the distance from the Earth to the Sun about 0. Scottish astronomer Thomas Henderson used his observations made in — and South African astronomer Thomas Maclear 's observations made in —, to determine that the value of the parallax was 0.

In , the German astronomer Friedrich Wilhelm Bessel deduced from changes in the proper motion of Sirius that it had an unseen companion. The visible star is now sometimes known as Sirius A. Since , some apparent orbital irregularities in the Sirius system have been observed, suggesting a third very small companion star, but this has never been confirmed. The best fit to the data indicates a six-year orbit around Sirius A and a mass of 0.

This star would be five to ten magnitudes fainter than the white dwarf Sirius B, which would make it difficult to observe. An apparent "third star" observed in the s is now believed to be a background object. In , Walter Sydney Adams , using a inch 1. Twiss in at Jodrell Bank using their stellar intensity interferometer. The 1st-century poet Marcus Manilius described it as "sea-blue", as did the 4th-century Avienius.

In , German astronomers Wolfhard Schlosser and Werner Bergmann published an account of an 8th-century Lombardic manuscript, which contains De cursu stellarum ratio by St. Gregory of Tours. The Latin text taught readers how to determine the times of nighttime prayers from positions of the stars, and a bright star described as rubeola —"reddish" was claimed to be Sirius.

The authors proposed this was further evidence Sirius B had been a red giant at the time. Gregory had been referring to Arcturus. The possibility that stellar evolution of either Sirius A or Sirius B could be responsible for this discrepancy has been rejected by astronomers on the grounds that the timescale of thousands of years is much too short and that there is no sign of the nebulosity in the system that would be expected had such a change taken place.

To the naked eye, it often appears to be flashing with red, white, and blue hues when near the horizon. In , a massive star cluster was discovered only 10 arcminutes from Sirius, making the two appear to be visually close to one other when viewed from the point of view of the Earth.

It was discovered during a statistical analysis of Gaia data. The cluster is over a thousand times further away from us than the star system, but given its size it still appears at magnitude 8. From the Southern Hemisphere in early July, Sirius can be seen in both the evening where it sets after the Sun and in the morning where it rises before the Sun. Sirius can be observed in daylight with the naked eye under the right conditions.

Ideally, the sky should be very clear, with the observer at a high altitude, the star passing overhead, and the Sun low on the horizon. These observing conditions are more easily met in the Southern Hemisphere, owing to the southerly declination of Sirius. The orbital motion of the Sirius binary system brings the two stars to a minimum angular separation of 3 arcseconds and a maximum of 11 arcseconds.

At the closest approach, it is an observational challenge to distinguish the white dwarf from its more luminous companion, requiring a telescope with at least mm 12 in aperture and excellent seeing conditions. After a periastron occurred in , [c] the pair moved apart, making them easier to separate with a telescope. Note that Canopus may be a bright giant [80] It is still around 25 times more luminous than the Sun. Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [e] roughly the distance between the Sun and Uranus and a period of The brighter component, termed Sirius A, is a main-sequence star of spectral type early A, with an estimated surface temperature of 9, K.

Currently 10, times less luminous in the visual spectrum, Sirius B was once the more massive of the two. Early in its life, it is thought to have been two bluish-white stars orbiting each other in an elliptical orbit every 9. This might be an indication of dust in the system, which is considered somewhat unusual for a binary star. In , Vigan and colleagues used the VLT Survey Telescope to search for evidence of substellar companions, and were able to rule out the presence of giant planets 11 times more massive than Jupiter at 0.

Sirius A has a mass of 2. Stellar models suggest that the star formed during the collapsing of a molecular cloud and that, after 10 million years, its internal energy generation was derived entirely from nuclear reactions. The core became convective and used the CNO cycle for energy generation. Sirius A is classed as an Am star because the spectrum shows deep metallic absorption lines , [94] indicating an enhancement of its surface layers in elements heavier than helium, such as iron.

The high surface content of metallic elements is unlikely to be true of the entire star; rather the iron-peak and heavy metals are radiatively levitated towards the surface. Sirius B is one of the most massive white dwarfs known. With a mass of 1. This mass is packed into a volume roughly equal to the Earth's. A white dwarf forms after a star has evolved from the main sequence and then passed through a red giant stage.

This occurred when Sirius B was less than half its current age, around million years ago. Given its extremely high mass, it is likely that Sirius B could have started out as a B-type star much heavier than the sun. While it passed through the red giant stage, Sirius B may have enriched the metallicity of its companion, explaining the very high metallicity of Sirius A.

This star is primarily composed of a carbon—oxygen mixture that was generated by helium fusion in the progenitor star. Since , irregularities have been observed in the orbits of Sirius A and B with an apparent periodicity of 6—6. A study concluded that such a companion likely exists, with a mass of roughly 0. More recent and accurate astrometric observations by the Hubble Space Telescope ruled out the existence of such a Sirius C entirely. The study predicted an astrometric movement of roughly 90 mas 0.

This ruled out any objects orbiting Sirius A with more than 0. The study was also able to rule out any companions to Sirius B with more than 0. Effectively, there are almost certainly no additional bodies in the Sirius system larger than a small brown dwarf or large exoplanet. In , Ejnar Hertzsprung was the first to suggest that Sirius was a member of the Ursa Major Moving Group , based on his observations of the system's movements across the sky.

The Ursa Major Group is a set of stars that share a common motion through space. It was once a member of an open cluster , but has since become gravitationally unbound from the cluster. The other two are the Hyades and the Pleiades , and each of these clusters consists of hundreds of stars. Sirius has over 50 other designations and names attached to it.

This name is widely used on medieval astrolabes from Western Europe. As Mrgavyadha, the star represents Rudra Shiva. Its astrological symbol was listed by Heinrich Cornelius Agrippa. Many cultures have historically attached special significance to Sirius, particularly in relation to dogs. Canis Major was classically depicted as Orion 's dog.

The Ancient Greeks thought that Sirius's emanations could affect dogs adversely, making them behave abnormally during the "dog days", the hottest days of the summer. The Romans knew these days as dies caniculares , and the star Sirius was called Canicula, "little dog". The excessive panting of dogs in hot weather was thought to place them at risk of desiccation and disease.

In extreme cases, a foaming dog might have rabies, which could infect and kill humans they had bitten. Sirius rises late in the dark, liquid sky On summer nights, star of stars, Orion's Dog they call it, brightest Of all, but an evil portent, bringing heat And fevers to suffering humanity.

In Iranian mythology, especially in Persian mythology and in Zoroastrianism , the ancient religion of Persia , Sirius appears as Tishtrya and is revered as the rain-maker divinity Tishtar of New Persian poetry. Beside passages in the sacred texts of the Avesta , the Avestan language Tishtrya followed by the version Tir in Middle and New Persian is also depicted in the Persian epic Shahnameh of Ferdowsi.

Because of the concept of the yazatas , powers which are "worthy of worship", Tishtrya is a divinity of rain and fertility and an antagonist of apaosha , the demon of drought. In this struggle, Tishtrya is depicted as a white horse.

Several cultures also associated the star with a bow and arrows. The ancient Chinese visualized a large bow and arrow across the southern sky, formed by the constellations of Puppis and Canis Major. In this, the arrow tip is pointed at the wolf Sirius. A similar association is depicted at the Temple of Hathor in Dendera , where the goddess Satet has drawn her arrow at Hathor Sirius. Known as "Tir", the star was portrayed as the arrow itself in later Persian culture. From there is it sent via the Sun to the god of Earth Sanat Kumara , and finally through the seven Masters of the Seven Rays to the human race.

The midnight culmination of Sirius in the northern hemisphere coincides with the beginning of the New Year [] of the Gregorian Calendar during the decades around the year Over the years, its midnight culmination moves slowly, owing to the combination of the star's proper motion and the precession of the equinoxes.

At the time of the introduction of the Gregorian calendar in the year , its culmination occurred 17 minutes before midnight into the new year under the assumption of a constant motion. According to Richard Hinckley Allen [] its mightnight culmination was celebrated at the Temple of Demeter at Eleusis. The Dogon people are an ethnic group in Mali , West Africa, reported by some researchers to have traditional astronomical knowledge about Sirius that would normally be considered impossible without the use of telescopes.

According to Marcel Griaule , they knew about the fifty-year orbital period of Sirius and its companion prior to western astronomers. Doubts have been raised about the validity of Griaule and Dieterlein's work.

All agree, however, that they learned about the star from Griaule. In his pseudoarcheology book The Sirius Mystery , Robert Temple claimed that the Dogon people have a tradition of contact with intelligent extraterrestrial beings from Sirius.

In the religion of the Serer people of Senegal , the Gambia and Mauritania , Sirius is called Yoonir from the Serer language and some of the Cangin language speakers, who are all ethnically Serers. The star Sirius is one of the most important and sacred stars in Serer religious cosmology and symbolism. The Serer high priests and priestesses Saltigues , the hereditary "rain priests" [] chart Yoonir in order to forecast rainfall and enable Serer farmers to start planting seeds.

In Serer religious cosmology, it is the symbol of the universe. Sirius features on the coat of arms of Macquarie University , and is the name of its alumnae journal. Sirius is a frequent subject in science fiction and related popular culture. Composer Karlheinz Stockhausen , who wrote a piece called Sirius , is claimed to have said on several occasions that he came from a planet in the Sirius system.

Astronomer Noah Brosch has speculated that the name of the character Sirius Black from the Harry Potter stories, who has a unique ability to transform into a black dog, might have been inspired by "Sirius B". Coordinates : 06 h 45 m From Wikipedia, the free encyclopedia. Star in the constellation Canis Major and brightest star in the night sky. Several terms redirect here. Main article: Gaia 1. Play media. See also: Winter Triangle.

See also: Nommo. Main articles: Serer religion and Saltigue. See also: Sirius in fiction. The goddess Sopdet was later syncretized with the goddess Isis , Sah was linked with Osiris , and Sopdu was linked with Horus. The day period of the absence of Sirius from the sky was understood as the passing of Sopdet-Isis and Sah-Osiris through the Egyptian underworld. Random House, Inc. Retrieved 6 April November , "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 2 : —, arXiv : Bright Star Catalogue 5th Revised Ed.

Preliminary Version ed. Bibcode : bsc.. Astronomy and Astrophysics. Monthly Notices of the Royal Astronomical Society. S2CID The Astrophysical Journal. Bibcode : ApJ Bibcode : AJ VizieR Online Data Catalog. Bibcode : yCat Astronomy Letters. Bibcode : AstL ISSN Gaia collaboration Proceedings of the International Astronomical Union. Poprad, Slovakia: Cambridge University Press. Bibcode : IAUS.. Measurement of v sin i in the southern hemisphere".

Star-names and Their Meanings. New York: G. Annals of the New York Academy of Sciences. Encyclopaedia of Hinduism, A Continuing Series. Anmol Publications PVT. ISBN The Kanji dictionary. Tuttle language library. Tuttle Publishing. Retrieved 20 October Retrieved 23 October The Brightest Stars. Sky and Telescope. Fasti IV, lines —

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