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Canopus also has a magnetic field that varies with the same period, detected by the Zeeman splitting of its spectral lines. [59] Canopus is bright at microwave wavelengths, one of the few F-class stars to be detected by radio. [60] The rotation period of the star is not accurately known, but may be over three hundred days. [10]
Canopus, Rigil Kentaurus, Achernar, and Hadar are the brightest stars in the southern sky. In the star chart to the right, declination is shown by the radial coordinate, starting at 90° south in the center and decreasing to 30° south at the outer edge.
The fixed stars includes all the stars visible to the naked eye other than the Sun, as well as the faint band of the Milky Way. Due to their star-like appearance when viewed with the naked eye, the few visible individual nebulae and other deep-sky objects also are counted among the fixed stars. Approximately 6,000 stars are visible to the naked ...
Such multiple star systems are indicated by parentheses showing the individual magnitudes of component stars bright enough to make a detectable contribution. For example, the binary star system Alpha Centauri has the total or combined magnitude of −0.27, while its two component stars have magnitudes of +0.01 and +1.33. [3]
In Māori mythology, Atutahi is the name of Canopus, (Alpha Carinae).Atutahi is the second brightest star in the night-time sky, second only to Sirius (Takurua). Aotahi, Autahi, and Atutahi, "First-light" or "Single-light", were equivalent names that also intimated the star's solitary or self-centered nature.
Arcturus is the brightest star in the constellation of Boötes. With an apparent visual magnitude of −0.05, Arcturus is the brightest star in the northern celestial hemisphere and the fourth-brightest star in the night sky, [14] after Sirius (−1.46 apparent magnitude), Canopus (−0.72) and α Centauri (combined
Canopus and the next fixed star α Centauri, 4.2 light-years away, are also located in the Southern Sky, having declinations around −60°; too close to the south celestial pole for either to be visible from Central Europe. [1]
Arrakis (fixed star), a various form of the proper name Alrakis for Mu Draconis. Arrakis (fictional planet), is also the name of the fictional planet on which Frank Herbert's novel Dune is set. However, the planet's primary is the star Canopus. Arrakis Planitia, a plain on Saturn's moon Titan; Arrakis Therapeutics, a biotechnology company