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The Sun is the brightest star as viewed from Earth, at −26.78 mag. The second brightest is Sirius at −1.46 mag. For comparison, the brightest non-stellar objects in the Solar System have maximum brightnesses of: the Moon −12.7 mag [1] Venus −4.92 mag; Jupiter −2.94 mag; Mars −2.94 mag; Mercury −2.48 mag; Saturn −0.55 mag [2]
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
Of particular note among these stars are "the dog star" Sirius, the brightest star in the sky, and four stars of the easily identified constellation Orion. Equatorial stars of the western hemisphere The equatorial region of the celestial sphere's western hemisphere includes 13 navigational stars from Gienah in the constellation Corvus to Markab ...
Star −0.29 [7] Alpha Centauri AB Binary star system Part of a triple star system with Proxima Centauri: −0.05 Arcturus: Star Brightest Population II star 0.03 −0.02 Vega: Star 0.08 0.03 [8] Capella: Quadruple star system: Brightest quadruple star system 0.13 0.05 [9] Rigel: Quadruple star system 0.13 [10] Large Magellanic Cloud: Galaxy ...
It appears prominently in the northern sky during the Northern Hemisphere's summer, and the whole constellation is visible for at least part of the year to observers north of latitude 42°S. [ 11 ] [ n 2 ] Its main asterism consists of six stars, [ n 3 ] and 73 stars in total are brighter than magnitude 6.5. [ 11 ]
Although it dates to antiquity, Sagitta has no star brighter than 3rd magnitude and has the third-smallest area of any constellation. Gamma Sagittae is the constellation's brightest star, with an apparent magnitude of 3.47. It is an aging red giant star 90% as massive as the Sun that has cooled and expanded to a radius 54 times greater than it.
Capella is the brightest star in the northern constellation of Auriga. It has the Bayer designation α Aurigae , which is Latinised to Alpha Aurigae and abbreviated Alpha Aur or α Aur . Capella is the sixth-brightest star in the night sky , and the third-brightest in the northern celestial hemisphere after Arcturus and Vega .
Polaris is a star in the northern circumpolar constellation of Ursa Minor. It is designated α Ursae Minoris (Latinized to Alpha Ursae Minoris) and is commonly called the North Star or Pole Star. With an apparent magnitude that fluctuates around 1.98, [1] it is the brightest star in the constellation and is readily visible to the naked eye at ...