Even in Homer's Illiad, we read of the wrathful Achilles "blazing as the star that cometh forth at Harvest-time, shining forth amid the host of stars in the darkness of the night, the star whose name men call Orion's Dog.
Q. Related: Canine constellations: Night sky goes to the dogs. Cefalo ereditò il cane e se lo portò dietro a Tebe (nella Beozia, a nord di Atene) dove una volpe malvagia stava devastando la campagna.
With orbital periods of 228 and 342 days, the planets have a 3:2 orbital resonance, which helps stabilise the system. Symbolism: Andromeda is also known as 'The Captive Princess' History & Mythology…, Antlia is one of the 88 constellations within the celestial sphere. Fra le galassie, spiccano le due galassie interagenti NGC 2207 e IC 2163, non tanto per la loro luminosità, quanto per il fatto che stanno subendo una reciproca fusione, che potrebbe portare alla nascita di una sola galassia ellittica. At only 8.6 light-years from Earth, Sirius is the fifth nearest star, and among those visible to the unaided eye, it is the nearest of all, save for Alpha Centauri. Canis Major contains eight stars known to support planetary systems. Shining at magnitude -1.44, Sirius appears nearly twice as bright as its closest competitor, Canopus, which itself appears almost due south of Sirius and is visible in the southern United States. Ethical solutions. Around 15 light-years in diameter, it is located 3700 light-years away from Earth, and has been dated to around 2.2 billion years old. , Sirius is the brightest star in the night sky at apparent magnitude −1.46 and one of the closest stars to Earth at a distance of 8.6 light-years. Canis Major represents the bigger dog following Orion, the hunter in Greek mythology. This is the month when the constellation of Orion, the mighty hunter, and his retinue dominate the southern sky at around 8 p.m. local time.  Iota Canis Majoris, lying between Sirius and Gamma, is another star that has been classified as a Beta Cephei variable, varying from magnitude 4.36 to 4.40 over a period of 1.92 hours.  Around 8 billion years old, it is an orange giant of spectral type K4III that is around as massive as the Sun but has expanded to 30 times the Sun's diameter. But another possible explanation surfaced with the 1862 discovery of the tiny companion star to Sirius, Sirius B, which is a white dwarf. The constellation hosts the brightest star on the whole nights sky, the star Sirius. , The Tharumba people of the Shoalhaven River saw three stars of Canis Major as Wunbula (Bat) and his two wives Murrumbool (Mrs Brown Snake) and Moodtha (Mrs Black Snake); bored of following their husband around, the women try to bury him while he is hunting a wombat down its hole.
Lying 2 degrees southwest of NGC 2362 is NGC 2354 a fainter open cluster of magnitude 6.5, with around 15 member stars visible with binoculars.
While most everyone gawks at Sirius, hardly anyone gives Adhara a second look. It is bright because of its proximity to the Solar System. Ha una magnitudine di 4,5. , "Great Dog" redirects here.
Meno ricco di M41, è formato da circa 50 stelle a 5000 anni luce da noi. It is one of the largest open clusters, estimated to contain about 500 stars, about 4,000 light years away. Their closest approach last occurred in 1993 and they will be at their greatest separation between 2020 and 2025. Download questions about the Canis Major Constellation here: Canis Major (answers are on this page), Teachers. Sirius is the brightest star in Canis Major. And it looks like, in setting its proper rank, Johann Bayer dropped Adhara as well!
, Flanking Sirius are Beta and Gamma Canis Majoris.
Mappa interattiva centrata sulla porzione di cielo occupata dal Cane Maggiore. NGC 2359 is an emission nebula, given the name Thor's Helmet. Between 1834 and 1844, the noted German astronomer, mathematician and physicist Friedrich W. Bessel discovered that Sirius did not travel on a straight path through space, but rather it displayed wavy irregularities.
 On the other hand, a globular cluster in Puppis, NGC 2298—which appears to be part of the Canis Major dwarf system—is extremely metal-poor, suggesting it did not arise from the Milky Way's thick disk, and instead is of extragalactic origin.
The star is nearing the end of its life, casting off its outside layers before it goes supernova. There have been a number of mythical dogs tied to Canis Major. HD 47186 b is a super earth, about 20 times the mass of our planet. As the interaction continues, gas and dust will be perturbed, sparking extensive star formation in both galaxies.
In contrast, the other bright stars of the constellation are stars of great distance and high luminosity.
For other uses, see, Constellation in the southern celestial hemisphere, The 41 additional constellations added in the 16th, 17th and 18th centuries, The IUE Mega Campaign: Wind Structure and Variability of HD 50896 (WN5), Journal of the British Astronomical Association, "Al Achsasi Al Mouakket, on a Catalogue of Stars in the Calendarium of", Monthly Notices of the Royal Astronomical Society, "Empirical Luminosities and Radii of Early-Type Stars after Hipparcos", "A systematic study of variability among OB-stars based on HIPPARCOS photometry", "Observations and Analysis of the System R Canis Majoris", "Distant World in Peril Discovered from La Silla: Giant Exoplanet Orbits Giant Star", "The HARPS Search for Southern Extra-solar Planets XVI. CANIS MAJOR The Big Dog Canis Major - Celestial Atlas by Alexander Jamieson - 1822. The reason it is so bright is because it is so close, only 8.7 light years away, the second closest naked eye star to Earth (after Alpha Centauri), and the fifth closest star overall. According to the ancient Greeks, Canis Major was an incredibly fast runner.
Sembra che il Cane Maggiore attraversi il cielo all'inseguimento della lepre, rappresentata appunto dalla costellazione della Lepre che sta sotto i piedi di Orione. http://www.astronomytrek.com/interesting-facts-about-the-constellation-canis-major/. Questo cane ebbe un lungo elenco di proprietari, una dei quali fu Procri, figlia del Re Eretteo di Atene e moglie di Cefalo, ma i resoconti di come sia venuta in possesso dell'animale non sono unanimi.
It is well below Sirius, in one of the dog's legs. Sebbene non abbondino gli oggetti galattici particolarmente luminosi, entro i confini della costellazione si trovano due ammassi aperti degni di nota, facilmente osservabili anche con telescopi amatoriali: sono gli ammassi aperti M41 e NGC 2362; il primo è talmente luminoso che in condizioni favorevoli, cioè in notti limpide e senza Luna, e osservato lontano da aree afflitte da inquinamento luminoso, può essere osservato ad occhio nudo; pare infatti che fosse già noto nell'antichità diversi secoli prima dell'invenzione del telescopio. Symbolism: Canis Major is also known as ‘The Greater Dog’. Brightest of all is he, yet for an evil sign is he set, and bringeth much fever upon hapless men...".  Its four main component stars are hot O-type stars, with a combined mass 80 times that of the Sun and shining with 500,000 times its luminosity, but little is known of their individual properties. Omicron2 is a massive supergiant star about 21 times as massive as the Sun. The dog is often depicted pursuing a hare, represented by the constellation Lepus. Nel Cane Maggiore ci sono alcune stelle variabili interessanti, tutte identificate con la Nomenclatura di Flamsteed. Its name is Latin for "greater dog" in contrast to Canis Minor, the "lesser dog"; both figures are commonly represented as following the constellation of Orion the hunter through the sky.
Legend had it that because Sirius rises at about the same time as the sun during the period from July 3 to Aug. 11, the star's brightness added to the sun's energy, producing additional warmth. NGC 2354, distante 6000 anni luce e composto di stelle con magnitudine intorno alla nona, si vede facilmente con un binocolo di media grandezza.
Adhara is more than 1,500 times more luminous than Sirius! Sirius is not a single star, but a double star, also known as a binary star system. It can be seen at latitudes between 60 degrees and -90 degrees. Symbolism: Apus is also known as 'The Bird of Paradise' History & Mythology Apus…, Aquarius is one of the 88 constellations within the celestial sphere. Ci fu un attimo in cui sembrò che il cane fosse riuscito a stringere la sua preda fra le ganasce, ma se le ritrovò piene d'aria mentre la volpe di Teumesso riprendeva a correre con rinnovata energia.
Indeed, the scorching heat was said to bring forth fever in humans and madness in dogs. It is 30 light years across, located about 15,000 light years away, with a magnitude around 10. The Myth Behind the Constellation Canis Major. Q.
Alternative names include Canis Sequens and Canis Alter. Available for a limited time! The system is only 5 million years old. If you have a dog, want a dog, or just plain like dogs, you've come to the right place for all kinds of information about living with and loving dogs.. Il Cane Maggiore è visibile nel cielo serale nei mesi compresi fra dicembre e aprile, coincidenti nell'emisfero boreale al periodo dell'inverno e della primavera; pur non essendo una costellazione molto estesa (ricopre solo 380 gradi quadrati di volta celeste), la sua individuazione in cielo è abbastanza semplice, grazie alla presenza della brillante stella Sirio, che rappresenta il naso (o la bocca) del cane. Part of the Orion family of constellations, it represents the larger of Orion's two hunting dogs. Open star cluster NGC 2362 is also visible to the naked eye at magnitude 4.1.
Ha una magnitudine intorno alla 4. But the star in the lower right corner of the triangle, which goes by the name Adhara, might better be called the Rodney Dangerfield of the night sky. Symbolism: Canis Major is also known as ‘The Greater Dog’ History & Mythology.