arcturus distance from earth
Based upon an annual parallax shift of 88.83 milliarcseconds as measured by the Hipparcos satellite, Arcturus is 36.7 light-years (11.26 parsecs) from the Sun. As the brightest K-type giant in the sky, it was the subject of an atlas of its visible spectrum, made from photographic spectra taken with the coudé spectrograph of the Mt. Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 88.85000 which gave the calculated distance to Arcturus as 36.71 light years away from Earth or 11.25 parsecs. (In antiquity, Arcturus was closer to the centre of the constellation. [38][39][40] or حارس الشمال ħāris al-shamāl’ "the keeper of north". Later it became a part of another constellation Kang Xiu (Chinese: 亢宿; pinyin: Kàng Xiǔ). Another Arabic name is Haris-el-sema, from حارس السماء ħāris al-samā’ "the keeper of heaven". The account is given in Hyginus's Astronomy. Closest approach will happen in about 4,000 years, when the star will be a few hundredths of a light-year closer to Earth than it is today. Walter, Philippe, Faccia M. [45]:24,69,112 The Wailwun of northern New South Wales knew Arcturus as Guembila "red". [45]:84, In Inuit astronomy, Arcturus is called the Old Man (Uttuqalualuk in Inuit languages) and The First Ones (Sivulliik in Inuit languages). The star was chosen as it was thought that light from Arcturus had started its journey at about the time of the previous Chicago World's Fair in 1893 (at 36.7 light-years away, the light actually started in 1896).[66]. [60][61][62][63][64][65], Arcturus achieved fame when its light was rumored to be the mechanism used to open the 1933 Chicago World's Fair. [59], One of the possible etymologies offered for the name "Arthur" assumes that it is derived from "Arcturus" and that the early Medieval character on whom the myth of King Arthur is based was originally named for the star. • Distance to Earth: 37 light years • Apparent Magnitude: -0.05 • Luminosity: 170 times solar luminosity • Surface Temp: 4,000C (7,200F) • Mass: 1.10 solar masses • Radius: 11 million miles (25.7 solar radii) • Rotational Velocity: 2.4 km per second • Age: 10 billion years old • Designations: Arcturus, Alpha Boötis, Alramech, Abramech. This substellar object would be nearly 12 times the mass of Jupiter and be located roughly at the same orbital distance from Arcturus as the Earth is from the Sun, at 1.1 astronomical units. So far no substellar companion has been confirmed. When did organ music become associated with baseball? : 'great horn'), because it is the brightest star in the Chinese constellation called Jiao Xiu (Chinese: 角宿; pinyin: Jiǎo Xiǔ; lit. Zimmer, Stefan, Die keltischen Wurzeln der Artussage: mit einer vollständigen Übersetzung der ältesten Artuserzählung Culhwch und Olwen, Winter, 2006, p. 37. Zimmer, Stefan, "The Name of Arthur – A New Etymology ", Journal of Celtic Linguistics, Volume 13, Number 1, March 2009, University of Wales Press, pp. [1] Because of its proximity, Arcturus has a high proper motion, two arcseconds a year, greater than any first magnitude star other than α Centauri. [11] It has been known by this name since at least the time of Hesiod. It is 1.08±0.06 times as massive as the Sun, but has expanded to 25.4±0.2 times its size and is around 170 times as luminous. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Recent results remain inconclusive, but do support the marginal Hipparcos detection of a binary companion. Ano ang mga kasabihan sa sa aking kababata? [7] It has likely exhausted the hydrogen from its core and is now in its active hydrogen shell burning phase. The light of ARCTURUS is so bright that the star was used to help open the Chicago World’s Fair in 1933 by powering several photoelectric cells with it to celebrate 40 years from the previous world’s fair in the city. This substellar object would be nearly 12 times the mass of Jupiter and be located roughly at the same orbital distance from Arcturus as the Earth is from the Sun, at 1.1 astronomical units.

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