red
Thuban is in the constellation Draco. Third star from the end of the tail of the dragon. About 5000 years ago it used to be the Polar star due to the slow wobble of the Earth as it rotates on its axis.
The color of a star is a good indicator of its temperature.
the star is yellow
the color of the vela star is?
A binary star is not any particular color. A binary star system can contain stars of any spectral type.
The surface temperature of the star Thuban is 9800 K. Another name for the Thuban star is Alpha Draconis. It is thought to be located 310 light years from the constellation of Draco.
red
2700BC
the magnitude is 3.6.
Thuban is in the constellation Draco. Third star from the end of the tail of the dragon. About 5000 years ago it used to be the Polar star due to the slow wobble of the Earth as it rotates on its axis.
The name pf the Pole star in the time of the pharaohs was Thuban
Thuban has a spectral class of A0. Similar to Vega in temperature and spectrum, but more powerful and more massive. Thuban is no longer a main sequence star, it has used up all the hydrogen in its core and is now fusing helium. That makes it a white giant star, being 250 times more powerful than our Sun. It's about 300 light years from us.
Yes, the name Polaris is used to refer to the North Star. Polaris used to be Thuban, then was Kochab, is now Cynosura and will, one day, be Elrai.
Thuban is a distance of 310 light years or 1,823 trillion miles, or 1,823,000,000,000,000 miles from Earth.
Polaris is the name used for the star above the North Pole. It used to be Thuban. Then Kochab was nearer the celestial pole and now it is Cynosura. In the future, it will be Elrai.
See link below!
Thuban, Kochab and Cynosura.