His claim led to the discovery of both Procyon B and Sirius B. It can be seen in its entirety from any location except those south of latitude 75S. and ADS 6251 B. Apparent Magnitude: Procyon A: 0.34 | Procyon B: 10.7 northeastern university graduation 2020 Comments may be merged or altered slightly, such as if it contains an email or website address. Canadian Space Agency's In the email will be a link to unsubscribe to further notifications. From mid-northern latitudes, Procyon appears just to the left of Orions hourglass asterism, above Sirius. Procyon A has the stellar classification F5 IV-V, indicating an evolved star still on the main sequence, appearing white in colour. Procyon A, or Alpha Canis Minoris A, is the brightest and most centrally located naked-eye star (07:39:18.12+05:13:29.98, ICRS 2000.0) of Constellation Canis Minor (the Smaller Dog). Dionysus placed the father, the daughter and the dog in the sky as the constellations Botes (Icarius), Virgo (Erigone) and the star Procyon (Maera). [40], Rarer names are the Latin translation of Procyon, Antecanis, and the Arabic-derived names AlShira and Elgomaisa. It would take a spaceship 11.41 years travelling at the speed of light to get there. In 2008, its oscillations were measured The New Horizons space probe is the fastest one that we've sent into space at the time of writing. Based on the star's spectral type (DQZ), Procyon B's colour is white. (a) how do astronomers determine the distance to nearby stars. Procyon. It's nothing to fear as the stars are so far apart they won't collide in our lifetime, if ever. Procyon. -- The distance of Spica from Earth (ds) = 260 ly. in a certain pattern. the Little Dog With an effective temperature of 6,530 K, it shines with 6.93 solar luminosities. Distance: 8.6 light-years; Procyon. Site rules; Feedback; Improve account; RSS; Your feedback and ideas Procyon B is also fainter and significantly less massive than Sirius B, even though it has a larger estimated radius (8,600 km) than its neighbour (5,800 km). Antares is 550 light years from Earth and the brightest star in the constellation of Scorpius. [36] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[37] to catalog and standardize proper names for stars. than our Sun, Sol. The distance from Procyon A where an Earth-type planet would be Well, Earth is located in the universe in the Virgo Supercluster of galaxies. In the core of Federation space, Procyon is visible from Earth in the constellation of Canis Minor, in the galaxy 's Beta Quadrant. The Universe is: Expanding, cooling, and dark. The celestial hemisphere is equivalent to the hemispheres on Earth. [39], The constellations in Macedonian folklore represented agricultural items and animals, reflecting their village way of life. Below is a tabular view of the star facts with the values of the Sun on the right so you can compare them against our star, the Sun. (Girard [26][27], Photometric measurements from the NASA Wide Field Infrared Explorer (WIRE) satellite from 1999 and 2000 showed evidence of granulation (convection near the surface of the star) and solar-like oscillations. The Galacto-Centric Distance is the distance from the Procyon to the Centre of the Galaxy which is Sagittarius A*. years of Sol's current age and turn into a red giant before puffing Check https://spotthestation.nasa.gov 1.5 hours after sunset April 21-22, 2023 . press Compared to Sol, moreover, Procyon A is hotter and about 7.5 times [19] The average separation of the two components is 15.0AU, a little less than the distance between Uranus and the Sun, though the eccentric orbit carries them as close as 8.9AU and as far as 21.0AU. The estimated mass of the progenitor star was about 2.59 solar masses. Question: procyon is 11.4 ly from earth and spica is 260 ly. In case you're wondering, Procyon is not located within the Solar System, and there is only one star in the Solar System, the Sun. from 1995 to 1999 found no supporting evidence for a large Jupiter Minoris A, is the brightest and most centrally located naked-eye star (Leccia Procyon is also the upper left member of the "Winter Triangle" of first magnitude stars . To the Romans, however, the star was known as Antecanis, which roughly means Not the Dog Star. You can decline to give a name; if that is the case, the comment will be attributed to a random star. et al, 2000) and about 1.4 to 2.3 times its diameter UGPS J0722-0540. Rank these stars in order from brightest to dimmest apparent magnitude: Vega, Archenar, Aldebaran, Arcturus, Hadar, Canopus, Procyon. [33] Extensive observations of Procyon were carried out with the Copernicus and TD-1A satellites in the late 1970s. [9] With a surface temperature of 7740K, it is also much cooler than SiriusB; this is a testament to its lesser mass and greater age. Lastly, the It will be visible a little earlier each evening until by late March can be seen from 7.40pm. HIPPARCOS' estimate of 11.4 ly Its estimated age is 1.87 billion years. There is no relationship between colour and size. Analysis of "soft x-ray" The questionnaire explored . dwarfs are incredibly dense objects because they squeeze a stellar Distance to Earth: 11.46 light years Star Type: white main . Procyon A is a yellowish star that is brighter et al, 1992). Console.WriteLine(" Procyon 2: {0}", epsilonIndiDistance.Equals(procyon2Distance)); Console.WriteLine(" Wolf 424 AB: {0}", epsilonIndiDistance.Equals(wolf424ABDistance . It wouldn't have sufficient mass to go supernova. 1. The German astronomer and physicist Friedrich Bessel was the first to propose that Procyon had an unseen companion in 1844. Jupiter), where its orbit period would be 4.2 years long. An Astronomical Unit is the distance between Earth and the Sun. Procyon, Alpha Canis Minoris ( CMi), is a binary star system with an apparent magnitude of 0.34, located at a distance of only 11.46 light years from Earth in the constellation Canis Minor.Like its brighter neighbour Sirius in Canis Major, it is one of the nearest star systems to the Sun.It is mainly the star's proximity and not its intrinsic brightness that makes it appear so bright to us. Procyon is located in the Milky Way galaxy, and this is the galaxy that you reside in. The first is a pure Lyran-Sirian . and Zhao, 2008). When can you see it? Some time before that though, in 31,490 years time to be exact, Procyon will reach its closest point of approach to the Sun, when it will be 11.19 light years (707,574 AU) away, after having crossed 11.19 degrees of the celestial sphere. Constellation: Orion; . Procyon AB -- Gl 280 AB -- differed from published orbital star in the night sky as well as the USAF Science of the Alpha . John Arthur If the R.A. is positive, then it's eastwards and vice versa. Age: Procyon A : 1.87 billion years | Procyon B : 1.37 billion years around 1.981 AUs from the star, while the outer edge lies even Luminosity is the amount of energy a star pumps out relative to the amount that our star, the Sun, gives out. [24][25] Subsequent observations in radial velocity have confirmed that Procyon is indeed oscillating. (Leccia 1)Light from the star Procyon takes 11.4 years to reach the earth. Typically, the brightest star in the constellation is classified as Alpha. In between being a Main Sequence star and its present state, it would've first grown in size and then thrown off its mass in the form of solar winds as a Planetary Nebula which has since dispersed. The smaller companion, Procyon B, is a white dwarf. Question 2. All Rights Reserved. They are separated by about 15 astronomical units (AU) on average or 15 times the Sun-Earth distance. on Nearby Stars ), According to one type of model calculations performed for the Saturn in the Solar System. Eventually it will swell up to anything between 80 and 150 times the diameter of the Sun somwhere between 10 million and 100 million years from now. There's no register feature and no need to give an email address if you don't want to. Due to precession over time, this is now only true from mid-northern latitudes. Coordinates: RA 07h 39m 18.1/17.7s | Dec +05 13 29/20 5.002), Zeta Canis Minoris (mag. Lang, 1980), more recent seismology data is consistent with and luminosity type F5 IV-V Its name comes from a Greek word meaning "sparkling . also "a slow variation in the radial velocity of Procyon Procyon is considered to be evolving from a normal mature star and will eventually become a red . (07:39:18.12+05:13:29.98, ICRS 2000.0) of Constellation When the moon passes it by on Monday, it will be shining at a respectable magnitude +0.4, which is just a bit dimmer than the yellow-white star Procyon in Canis Minor. Procyon's Iron Abundance is -0.02 with an error value of 9.99 Fe/H, with the Sun having a value of 1 to put it into context. has done some calculations as to how long it will take to go at differing speeds. The Procyon-A star system consists of six relatively small planets. NASA Their average separation is 15 astronomical units, almost the distance from the Sun to Uranus. They include many of Procyons bright neighbours: Sirius, Adhara, Betelgeuse, Rigel, Bellatrix, Alnilam, and Pollux. It starts with a bang! [9], In late June 2004, Canada's orbital MOST satellite telescope carried out a 32-day survey of ProcyonA. The International Astronomical Unions (IAU) Working Group on Star Names (WGSN) officially approved the name for Alpha Canis Minoris A on June 30, 2016. site for other information about At the time, telescopes powerful enough to observe the companion stars did not exist. (b) 36.2 ly. The flyby velocity will be less than 10 km/s relative to the target asteroid. It is located at a distance of 310 light years from Earth. [41] AlShira derives from a-ira a-amiyah, "the Syrian sign" (the other sign being Sirius; "Syria" is supposedly a reference to its northern location relative to Sirius); Elgomaisa derives from al-ghumaisa "the bleary-eyed (woman)", in contrast to "the teary-eyed (woman)", which is Sirius. 18 Sirius: -1.5 Betelgeuse: ~0.8 Pleiades: ~ mag 4 Credit: NASA/ESA/AURA/Caltech Procyon: 0.4 - Magnitude difference between Sirius and Procyon: ~ 2 - Sirius is ~ 6 times brighter than Procyon ( = 2.5 2) 19 Betelgeuse AAVSO . The Dipper's handle "arcs" toward . [5] It has a stellar classification of DQZ,[5] having a helium-dominated atmosphere with traces of heavy elements. It is named after Willem Jacob Luyten, a Dutch American Astronomer. (Canis Minoris, and its 1st magnitude star Procyon) we encounter Monoceros . The nights may be growing shorter now, but with the weather gradually warming up, spring is a great time for . Were the Sun to be observed from this star system, it would appear to be a magnitude 2.55 star in the constellation Aquila with the exact opposite coordinates at right ascension 19h 39m 18.11950s, declination 051329.9552. Useful star catalogue numbers for this Procyon B include Gl 280 B arc-seconds (larger When you look at Procyon, you are looking back in time and seeing how it looked years ago. Sirius, Alpha Canis Majoris ( CMa), is the brightest star in the night sky and one of the nearest star systems to Earth. There are no exoplanets recorded on the site for the star, and that is most likely the case. Alpha Canis Minoris A has a close companion star B that is separated middle of the main asteriod belt in the Solar System between Mars and because Procyon rises immediately before Sirius, the "Dog Star." Small stars are more energy efficient than larger stars and live longer. Previous estimates of the orbital elements of this binary system It is slightly fainter than Rigel in Orion and a little brighter than Achernar in Eridanus. At a distance of 2.6 parsecs (8.6 ly), the Sirius system contains two of the eight nearest stars to the Sun, and it is the fifth closest stellar system to the Sun. There are no known exoplanets in orbit round the star, there might or might not be any but due to their size compared to the star, they'll be very hard to spot compared to other smaller stars hence why none have been spotted around a supergiant. Procyon A,B - Type= F5 + DA, Magnitudes=0.4+10.7, Distance=11.41 ly A brilliant yellow-white star, and the eighth brightest star in the sky. The distance of Procyon from Earth in parsec (dp) is. The South River is an asterism formed by Procyon with Gomeisa (Beta Canis Minoris) and Epsilon Canis Minoris. The catalogue lists 2 million stars, and its homepage is. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. Based on the star's spectral type (F5IV-V), Procyon's colour is yellow - white. Canis The Declination (Latitude) is how far north or south the object is compared to the celestial equator and is expressed in degrees. This much dimmer star is a white dwarf (DQZ,A4 or QZ,A4 VII), whose Kenneth Croswell, et al in 1992 and by about 10 days" class codes, go to ChView's webpage on Procyon is usually the eighth-brightest star in the night sky, culminating at midnight on 14 January. Procyon is visible from Earth without needing visual aids. It's also one of the reddest-looking and coldest brown dwarfs. Procyon, Betelgeuse and the Rosette Nebula, image: Wikisky. Its distance from the solar system is 8.6 light-years, only twice the distance of the nearest known star system beyond the Sun, the Alpha Centauri system. life on any Earth-type planet orbiting Procyon A, it is likely to be [Larger] In case you're wondering, Procyon B is not located within the Solar System, and there is only one star in the Solar System, the Sun. Mass: Procyon A: 1.499 solar mass | Procyon B: 0.602 solar mass As determined by the European Space Agency Hipparcos astrometry satellite,[16] this system lies at a distance of just 11.46 light-years (3.51 parsecs),[2] and is therefore one of Earth's nearest stellar neighbors. We recorded 4450 predated nests in total (N = 30,148 nesting events); predation rates . boost its brightness when located in front of the star as Located at a distance of 860 light years from Earth, Rigel is the most distant star in the top 10 brightest stars list. outer layers are being reexamined (UBC A binary star system, Procyon consists of a white-hued main-sequence star of spectral type F5IVV, designated component A, in orbit with a faint white dwarf companion of spectral type DQZ,[5] named Procyon B. Star Type: white main-sequence Procyon A (F5 IVV), white dwarf Procyon B (DQZ) The physical distance between them varies between 8.2 and 31.5 astronomical units. It has been known to produce widely incorrect figures. Procyon B is a binary or multiple star system. At a distance of 4.25 light years, Proxima is the closest-known star to our solar system. Procyon distance from Earth is 11.41 light-years away from Earth or 3.50 parsecs In 2007, Hipparcos data was revised with a new parallax of 284.56000, which puts the Procyon distance from Earth as 11.46 light years or 3.51 parsecs. 4.55), Epsilon Canis Minoris (mag. (For an illustrated discussion, Kenneth R. The Procyon System is located about 11.5 light-years (ly) from our Sun. Quantitative Problem 50; Alpha Centauri A: Distance = 4 light years Apparent brightness = 2 * 10^-8 watts/m^ 1 light year = 9 x 10^12 km = 9 x 10^15 m. Apparent brightness formula: Apparent brightness = [luminosity/(4pi . translated into Latin equivalent as "Antecanis" or "Before the Dog" Betelgeuse (Alpha Orionis) at 1.8 billion years CSA It takes the two stars within 8.9 astronomical units of each other and as far apart as 21 astronomical units. The map was generated using Night Vision, a great free application by Brian Simpson. NASA Star Distance from Earth Sun 15.8 x 10-6 light years Proxima Centauri 4.2 light years Epsilon Eridani 10.5 light years Procyon 11.4 light years Which of the following most likely appears brightest from Earth? In the email will be a link to unsubscribe to further notifications. -- Galaxy - A mass of up to several billion stars held together by gravity. It is also a little younger than its neighbour, with an estimated age of 1.37 billion years. It is a major star and forms part of the outline. The name Procyon comes from the Ancient Greek (Prokyon), meaning "before the dog", since it precedes the "Dog Star" Sirius as it travels across the sky due to Earth's rotation. These are equivalent to the Longitude and Latitude on Earth. brightest It is mainly the stars proximity and not its intrinsic brightness that makes it appear so bright to us. Mass: 18 x Sun. Procyon It is also known as the Dog Star, in reference to its position as the luminary of the constellation Canis Major . [3] It has the Bayer designation Canis Minoris, which is Latinized to Alpha Canis Minoris, and abbreviated CMi or Alpha CMi, respectively. Triangle" of first magnitude stars, whose other components are The Stars of For more information about stars including spectral and luminosity Lab #10 Polynesian Wayfinding name: attendance: 1pt lab 10 polynesian wayfinding introduction in this lab, we will explore the tools and techniques taught and Lick Observatory. There is a relationship between colour and temperature, stars that are closer to red in the rainbow spectrum are cooler whereas those closer to blue are hotter. Procyon A is a white main sequence star (F5IVV) about twice as big as the Sun, 1.4 times as massive, but with a significantly higher surface temperature of 6550K (11,300 degrees F), making it 6.9 times more luminous than the Sun. 3) PROCYON will perform a close flyby trajectory, with guidance provided by optical navigation and will pass within 50 km distance from the asteroid. The B.D. (more). The smaller the number, the brighter the star is. [45] In Tahitian lore, Procyon was one of the pillars propping up the sky, known as An-tahu'a-vahine-o-toa-te-manava ("star-the-priestess-of-brave-heart"), the pillar for elocution. Rotational Velocity: 3.16 km/s (Procyon A) The International Space Station orbits Earth every 90 minutes at 17,000 mph. Procyon: yellowish white star in Canis Minor Sirius: brightest star in the night sky, located . It orbits a red dwarf star every 28 days and is at least 4.5 times as massive as Earth. Arthur The predation of solitary nests was monitored from 2008 to 2021, recording date, time, sector of the beach, zone, status of nest (predated or partially predated) and predator when possible. Procyon age according to Hipparcos data files put the star at an age of about 1.7 billion years old but could be between 1.6 and 1.8 billion years old. Suppose that Procyon were to go Super Nova (explode) on exactly January 1st 2021. We can measure the distance with this method using different units, but the most commonly used one is a parsec. The stars Castor and Pollux in Gemini represented the Ducks hands. GJ 280, SAO 115756, GCRV 5099, HIP 37279, PPM 153068, BD+051739, LHS 233, IRAS 07366+0520, TYC 187-2184-1, Procyon A, Alpha Canis Minoris A, CCDM J07393+0514A, Procyon B, Alpha Canis Minoris B, CCDM J07393+0514B, GJ 280 B. Small angle formula. the Milky Way. away its outer layers to reveal a remnant core as a white dwarf. It has an apparent magnitude of only 10.7. Biology of the Living Earth Course Aug 2020 - Dec 2020 This is a link to the Google Classroom Site for introductory High School Biology Classes (Honors and Standard) at Maywood Center for Enriched . free oxygen in the atmosphere of such a planet, it probably would not "on average" by only about 16 times the distance from the Earth to the #Cosmology Science writer, astrophysicist, science communicator & NASA columnist. [18], Procyon is a binary star system with a bright primary component, Procyon A, having an apparent magnitude of 0.34,[3] and a faint companion, Procyon B, at magnitude 10.7. It is not part of the Canis Minor constellation outline but is within the borders of the constellation. The Id of the star in the Yale Bright Star Catalogue is HR2943. . The star is believed to have spent about 680 million years on the main sequence, fusing hydrogen in its core, before evolving into a giant, losing most of its mass due to stellar winds, and ending its life cycle about 1.19 billion years ago, when it became a white dwarf. Procyon reaches the highest point in the sky in late winter. Sol Company. Procyon is one of the 27 stars featured on the flag of Brazil. is a third optical companion C. ---------------------------------------------- [Full Near Star Map] [9], Attempts to detect X-ray emission from Procyon with nonimaging, soft X-ray-sensitive detectors prior to 1975 failed. The existence of Procyon B was first inferred in the 19th century. "ash" mixed with hydrogen at its core. Picture of the Day). At present, Procyon is slightly hotter than the Sun, with a temperature of 6,530 Kelvin (versus the Sun's 5,770 K). A note about the calculations, when I'm talking about years, I'm talking about non-leap years only (365 days). Procyon is the brightest star in Canis Minor and the 8th brightest star in the sky. 2) a)Consider electromagnetic waves propagating in air.Determine the frequency of a wave with a wavelength of 5.40 km. list of the 100 with elements heavier than hydrogen when it cast off its outer gas layers, image Below is a tabular view of the star facts with the values of the Sun on the right so you can compare them against our star, the Sun. Procyon apparent magnitude is 0.4, which is a measure of the star's brightness as seen from Earth. Procyon is also known as BD +05 1739. It is a naked-eye star, so you don't need a telescope or binoculars. close proximity and large disparity in brightness with its primary Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. The Hawaiians see Procyon as part of an asterism Ke ka o Makali'i ("the canoe bailer of Makali'i") that helps them navigate at sea. First we find the distance of Spica from Earth in parsec (ds). [5][32] The radius agrees with white dwarf models that assume a carbon core. oxygen-producing microbes have not yet had time to develop and generate There's no register feature and no need to give an email address if you don't want to. to have 60.2 percent of Sol's mass "Winter the Absolute Magnitude is the star's apparent magnitude from 10 parsecs or 32.6 light years. It would take a spaceship 11.41 years travelling at the speed of light to get there. The stars brightness, which is high for its class, indicates that the star has almost run out of hydrogen in its core and begun to expand as it continues to evolve into a subgiant. 2 parsecs. The other hunters did away with him after persuading him to go on the sea ice. 172K Followers. For the genus of raccoons, see, Last edited on 26 February 2023, at 09:56, Monthly Notices of the Royal Astronomical Society, "The Making of History's Greatest Star Map", "Brief Communications Arising: Oscillations on the star Procyon", "Untersuchungen uber veranderliche eigenbewegungen", "Bulletin of the IAU Working Group on Star Names, No. and our Sun. A team of transatlantic scientists, using reanalyzed data from NASA's Kepler space telescope, has discovered an Earth-size exoplanet orbiting in its star's habitable zone, the area around a star where a rocky planet could support liquid water. The constellations we see today will be different than they were 50,000 years ago or 50,000 years from now. in Canis Minor, Eggenburger The two stars have an orbital period of 40.82 years and an elliptical orbit with an eccentricity of 0.407. The plane of their orbit is inclined at an angle of 31.1 to the line of sight with the Earth. Procyon . A faint star will have a high number. Procyon is south of the Ecliptic. The separation between the orbiting pair varies from 8.9 AU to as much as 21 AU, with an average separation of 15 AU, which is just a little less than the mean distance between the Sun and the planet Uranus. In addition to its New Suspect Variable (NVS) Procyon B is hotter than Procyon A, with an estimated temperature of 7,740 K, but shines with only 0.00049 solar luminosities. The continuous optical monitoring was intended to confirm solar-like oscillations in its brightness observed from Earth and to permit asteroseismology. No one has visited Procyon B, and we have no probes on a rendezvous with the star. A number represents a stars magnitude, whether apparent/visual or absolute. Other Designations: Elgomaisa, Algomeysa, Antecanis, Alpha Canis Minoris. have an ozone layer (O3) although Procyon A zone around Procyon A. Study with Quizlet and memorize flashcards containing terms like About how many stars can be seen from somewhere on Earth with the naked eye?, About how many stars has the Hipparcos mission given us accurate distance data on?, Procyon lies about 13 light years distant, thus its parallax is about: and more. Visual Orbits of Binary Stars, orbits of Stars A and B and their The Sun is our nearest star, which keeps us warm and gives us light as we complete one orbit in 365.24 days. Draconis-type variable star. 4.39), 6 Canis Minoris (mag. zone around Procyon A.). Internet 1896 by The name Procyon (pronunciation: /prosin/, with stress on the first syllable) is derived from the Greek (Prokyon), which means before the dog. The name is a reference to Procyon rising before Sirius, the Dog Star, when seen from most locations north of the equator. [47], Procyon appears on the flag of Brazil, symbolizing the state of Amazonas. Indeed, Procyon A is unusually bright for its spectral type and so Canis Minoris (Latinized to Alpha Canis Minoris) is the star's Bayer designation. [Guide] He was killed by the other hunters who convinced him to go on the sea ice. Procyon is a spectroscopic binary located in the constellation of Canis Minor, The Small Dog. but while a diameter of 1.96 has been derived using a power law catalogue numbers include: Alp or Alf CMi, 10 CMi, HR 2943, |Before retiring, Concorde was the fastest commercial aeroplane and the only passenger jet that could do Mach 2. Procyon A and B orbit each other every 40 years. For example, a red star can be large or small. The Right Ascension (Longitude) is expressed in time (hh:mm:ss) and is how far along Earth's celestial equator the star is. As a result, models based on observations of Sol, for measuring The Procyon system is composed of Procyon A, a white hydrogen-fusing dwarf of the spectral type F5 IV-V, and Procyon B, a much fainter white dwarf companion with the stellar classification DQZ. Mach 1 is the speed of sound; Mach 2 is twice the speed. "The close proximity of the planets around Wolf 1061 means there is a good chance these planets may pass across the face of the star. It would be as bright as Scorpii is in our sky. Its eponymous name means "the one who never goes onto the newly formed sea ice", and refers to a man who stole food from his village's hunters because he was too obese to hunt on ice. Procyon (also known as Alpha Canis Minoris) is a binary star system, made up of companion stars named Procyon A and Procyon B about 3.49 parsecs (11.4 light-years) from Earth. If there is life on any Earth-type planet orbiting Procyon A, it is likely to be . English astronomer and mathematician Edmond Halley is credited for the discovery. the Astronomiches Rechen-Institut at Heidelberg's However, Procyon B was not detected visually until of this faint but massive companion and published a computed period of light-years of Procyon AB. four and a half times the distance between the two pointer stars. 9 - Name: Procyon - Apparent Magnitude: 0.38. Procyon and Sirius were mentioned in numerous ancient texts and played a prominent role in many ancient cultures, including Babylon and Egypt.
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