Arcturus - Wikipedia
WEBArcturus 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.
Arcturus: Facts About the Bright Red Giant Star | Space
WEBFeb 11, 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...
Arcturus Star | Pictures, Location, and the Origin of its Name
WEBConstellation: Boötes, the Herdsman. Type: Red Giant (K1.5III) Distance to Earth: ~37 light-years. Radius: 25.4±0.2 [7] R☉. Apparent magnitude: -0.30. Surface Temperature: 4286±30 [7] K. Coordinates: 14h 15m 39s RA, +19° 10′ 56” DE. Arcturus The Red Giant. Arcturus is an evolved and aging red giant star that is 25 times larger than our sun.
Meet Arcturus: Guardian of the Bear - Sky & Telescope
WEBOct 13, 2020 · In fact, Arcturus is the fourth-brightest star in the night sky, outshone only by Sirius, Canopus, and Alpha Centauri, and the second brightest for much of the Northern Hemisphere. Arcturus is a star on the move — it speeds …
Arcturus - Alpha Boötis – Constellation Guide
WEBAug 31, 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.
Arcturus, the brightest star of the northern sky - EarthSky
WEB5 days ago · Donate here. Arcturus is a red giant star located only 36.7 light-years away. It’s the 4th-brightest star in the sky and the brightest one in the northern half of the sky. Look for it on spring...
Arcturus | Brightest Star, Red Giant, Constellation Bootes
WEBArcturus, the fourth brightest star in the night sky, and the brightest star in the northern constellation Boötes, with an apparent visual magnitude of −0.05. It is an orange-coloured giant star 36.7 light-years from Earth. It lies in an almost direct line with the tail of Ursa Major (the Great.
Arcturus (α Boo): Star Type, Size, Name, Constellation - Star Facts
WEBJun 9, 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. With an estimated age of 7.1 billion years, Arcturus is a bit older than the Sun (4.5 billion years).
Boötes the Herdsman and its bright star Arcturus - EarthSky
WEBJun 24, 2023 · Arcturus is the brightest star in the constellation. Chart via Chelynne Campion. Boötes the Herdsman is a Northern Hemisphere constellation best seen in the late spring or early summer. It’s one...
Arcturus (α Boötis) | Facts, Information, History & Definition
WEBJanuary 20, 2020. Arcturus is the brightest star in the constellation of Boötes. It is the fourth-brightest star in the night sky, yet the brightest in the northern celestial hemisphere. Key Facts & Summary.
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