Aldebaran

 Aldebaran

Aldebaran, designated α Tauri, is a giant star measured to be about 65 light-years from the Sun in the zodiac constellation Taurus. It is the brightest star in Taurus and generally the fourteenth-brightest star in the night sky, though it varies slowly in brightness between magnitude 0.75 and 0.95. 

Information 

Distance to Earth :- 65.23 light years

Surface temperature :- 3,910 K

Radius :- 30.701 million km

Magnitude :- -2.1

Age :- 6.605 billion years

Constellation :- Taurus

Spectral type :- K5III

Discovery date

The first one was discovered by the German-born British astronomer William Herschel in 1782. It is an 11th magnitude star separated by 117'' from Aldebaran. In 1888, a full century later, American astronomer Sherburne Wesley Burnham observed the star and found that it was a close binary system.

Composition

Chemical Composition

Aldebaran has now evolved out of the main sequence, and has fully shifted from the fusion of hydrogen to helium at its core to the fusion to helium to carbon and oxygen, with trace activity of other nuclear processes.

Stages

Aldebaran

Observation data Epoch J2000.0 Equinox J2000.0
Evolutionary stage	Red giant branch
Spectral type	K5+ III
Apparent magnitude (J)	−2.095
U−B color index	+1.92