Aldebaran

87Alp Tau

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An orange K-type star, Aldebaran glows with the warm tint captured in its high B–V colour index of 1.538. It is Alpha Tauri, the brightest star of the constellation Taurus, appearing to sit against the Hyades cluster as the bull's eye. At apparent magnitude 0.87 and a distance of 66.6 light-years, the star's absolute magnitude of −0.68 shows an intrinsic brightness moderately above the Sun's. Its northern declination of +16° makes Aldebaran visible from both hemispheres, and its distinctly orange light stands out among the largely blue and white first-magnitude stars of the northern winter sky.

Physical Properties

Spectral Class K Class K — K-type (Orange)
Color Index (B−V) 1.538

Observation

Apparent Magnitude +0.87
Absolute Magnitude -0.68
Distance 66.6 ly
Constellation Taurus

Position

Right Ascension 4h 35.92m
Declination 16° 30.56′

Related Chemistry

Explore the chemical elements connected to Aldebaran on our sister site ChemFYI.

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Frequently Asked Questions

What type of star is Aldebaran?
Aldebaran is a Class K — K-type (Orange) star.
How far is Aldebaran from Earth?
Aldebaran is approximately 66.6 light-years from Earth.
Can you see Aldebaran with the naked eye?
With an apparent magnitude of 0.87, Aldebaran is visible to the naked eye.
What constellation is Aldebaran in?
Aldebaran is located in the constellation Taurus.