the magnitude is 3.6.
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∙ 10y agoThe 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.
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.
For apparent magnitudes, a magnitude of zero has the same magnitude as Vega. A first magnitude star is 40 percent as bright and a fifth magnitude star is one percent. So, a first magnitude star is 40 times as bright as a fifth.
A star with a magnitude of 2.0 is a star that is exactly 2.1544 times as bright as a star whose magnitude is 3.0, and (1/2.1544) times as bright as one with a magnitude of 1.0
The magnitude of a star refers to its brightness.
Its absolute magnitude is -1.20.Its magnitude from our point of view is +3.65.
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.
2700BC
purpleish orange red
The brightest is Gamma Draconis or Eltanin or Etanin (magnitude 2.2) The second brightest is Beta Draconis or Rastaban (magnitude 2.8) Traditionally the star designated as Alpha is the brightest in most constellations but not in Draco. Alpha Draconis or Thuban and is magnitude 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
the brightness of a star is called it's magnitude
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.
The magnitude is the brightness of the star.
A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.
The magnitude of a star means how bright it is.