1) Henry Draper Catalogue object 2) HR object 3) Star with proper name 4) Star in Draco
Found on
https://www.crosswordclues.com/clue/thuban
1) Star
Found on
https://www.crosswordclues.com/clue/thuban
Thuban, also known by its Bayer designation Alpha Draconis (α Draconis, α Dra), is a star (or star system) in the constellation of Draco. A relatively inconspicuous star in the night sky of the Northern Hemisphere, it is historically significant as having been the north pole star in ancient times. Thuban is an Arabic word for snake ثعبان th...
Found on
http://en.wikipedia.org/wiki/Thuban
(from the article `polestar`) ...circle in the sky over a period of 25,800 years. Each of a succession of stars has thus passed near enough to the north celestial pole to serve as ... ...series of different stars to become pole stars in turn. Polaris, the present pole star, will come nearest to the north celestial pole around the ... ...
Found on
http://www.britannica.com/eb/a-z/t/46
(Alpha Draconis) The fourth brightest star in the constellation Draco. Thuban used to be the pole star, a distinction it held from 3942 BC to 1793 BC when it was superceded by the faint star Kappa Draconis. In 2787 BC, it lay just 1/180 the width of the full Moon from the p...
Found on
http://www.daviddarling.info/encyclopedia/T/Thuban.html
No exact match found.
