Arcturus is the brightest star in the northern constellation of Bootes.
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13 Facts About Arcturus
2.
Name Arcturus is Latinised from the Greek star name ???t????? meaning "the Guard".
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3.
Arcturus has been seen at or just before sunset with the naked eye.
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4.
Arcturus is visible from both of Earth's hemispheres as it is located 19° north of the celestial equator.
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6.
Arcturus is an evolved red giant star with an early K-type stellar classification.
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7.
The atmosphere of Arcturus has an enrichment of alpha elements relative to iron but only about a third of solar metallicity.
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8.
Hipparcos satellite astrometry suggested that Arcturus is a binary star, with the companion about twenty times dimmer than the primary and orbiting close enough to be at the very limits of humans' current ability to make it out.
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9.
Aratus in his Phaenomena said that the star Arcturus lay below the belt of Arctophylax, and according to Ptolemy in the Almagest it lay between his thighs.
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10.
Arcturus is specified as ?????? ?????? as-simak ar-ramih "the uplifted one of the lancer".
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11.
In Indian astronomy, Arcturus is called Swati or Svati, possibly 'su' + 'ati' meaning very beneficent.
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12.
Arcturus had several other names that described its significance to indigenous Polynesians.
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13.
Arcturus's light was employed in the mechanism used to open the 1933 Chicago World's Fair.
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