Algol - β Persei (beta Persei)
Algol, also designated as β Persei (beta Persei), is a variable and multiple main-sequence star of spectral class B8 in the constellation of Perseus.
Algol visual magnitude is 2.12, making it the 60th brightest star in the sky. Because of its brightness, Algol is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Algol is situated in the Hertzsprung–Russell diagram.
Star System Properties
Algol is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Algol double sysyem:
Distance, Radial Speed, Proper Motion
Algol is distant 92.77 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.
Alternative Designations
Visibility from Your Location
Algol - β Persei (beta Persei) is circumpolar and transits at 11:16 UTC (altitude: 79.6°)