Star
Algol
Blue-white star · B8V
β Persei · Perseus
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Algol, designated Beta Persei, known colloquially as the Demon Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to be discovered.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~89.9 light-years
Apparent mag.
+2.09
Spectral type
B8V
Luminosity
96.6 × Sun
Absolute mag.
−0.11
Catalogue
HIP 14576
Spectral type
B8V
True colour from its B–V index (0.00): a surface around 10100 K.
Did you know
- Algol is also known as β Persei.
- Its spectral type B8V marks it as a blue-white star.
- It lies in the constellation Perseus.
