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11 Φεβ 2022 · Arcturus is a red giant star in the Northern Hemisphere of Earth 's sky and the brightest star in the constellation Boötes (the herdsman). Arcturus is also among the brightest stars that can be...
9 Ιουν 2023 · Arcturus is a giant star of the spectral type K1.5IIIFe-0.5. It is the brightest class K giant in the sky, outshining Aldebaran (mag. 0.86) in the constellation Taurus and Pollux (mag. 1.14) in Gemini. It has an absolute magnitude of about -0.30.
An online interactive planetarium application to explore the night sky and find constellations, planets, asteroids and other celestial objects visible from any location.
Coordinates: 14 h 15 m 39.7 s, 19° 10′ 56″. Arcturus is the brightest star in the northern constellation of Boötes. With an apparent visual magnitude of −0.05, [2] it is the fourth-brightest star in the night sky, and the brightest in the northern celestial hemisphere.
2 ημέρες πριν · Stellarium Web is a planetarium running in your web browser. It shows a realistic star map, just like what you see with the naked eye, binoculars or a telescope.
31 Αυγ 2014 · Arcturus, Alpha Boötis, is the brightest star in Boötes constellation and the fourth brightest star in the sky. With an apparent magnitude of -0.04, Arcturus is the brightest star in the northern celestial hemisphere.
Star System and Size. Arcturus is an orange giant star of the spectral type K0 III and is the brightest class K giant in the sky, with an absolute magnitude of about -0.30. It has around the same mass as the Sun, only 1.08 times the mass, yet is 25.4 times its size.
