Algol

Introduction
Algol, also known as Gorgona, Gorgonea Prima, Demon Star, El Ghoul, β Persei, β Per, 26 Persei, BD+40°673, FK5 111, GC 3733, HD 19356, HIP 14576, HR 936, PPM 45864 and  SAO 38592, is a Trio Star System located inside The Perseus Constellation. Algol is The First discovered non-nova variable stars. Algol is 90 Light Years from The Sun. Algol has three stars, these stars are β Per Aa1, β Per Aa2 and β Per Ab. 
β Per Aa1
β Per Aa1 has a mass of 3.17 Solar Masses, a radius of 2.73 Solar Radiuses and a luminosity of 182 Solar Luminosities. β Per Aa1 has a surface gravity of 4 centimeter-gram-second system of units and a temperature of 13,000 Kelvin. β Per Aa1 is 570 Million Years Old. 
β Per Aa2
β Per Aa2 has a mass of 0.7 Solar Masses, a radius of 3.48 Solar Radiuses and a luminosity of 6.92 Solar Luminosities. β Per Aa2 has a surface gravity of 3.5 centimeter-gram-second system of units and a temperature of 4500 Kelvin.
β Per Ab
β Per Ab has a mass of 1.76 Solar Masses, a radius of 1.73 Solar Radiuses and a luminosity of 10 Solar Luminosities. β Per Ab has a surface gravity of 4.5 centimeter-gram-second system of units and a temperature of 7500 Kelvin. 
Profile of The Demon Star
The Earliest account of Algol is in The Ancient Egyptian Calendar for Lucky and Unlucky Days. The name Demon Star being attributed to Algol comes from The Classical World Tradition with The Gorgon; which was a humanoid creatures with serpents for hairs like Medusa; and in Arabic Tradition with The Ghoul;a demon-like humanoid monster who ate upon human flesh.