Delta Persei is a binary star system located in the constellation of Perseus. It is approximately 98 light-years away from Earth and consists of two stars: a bright giant star and a smaller companion star. The primary star is classified as a spectral type A, which means it is hotter and more luminous than our Sun. The system is notable for its variability, as the primary star exhibits changes in brightness over time. This variability is due to its pulsating nature, making it a type of pulsating variable star. Observing Delta Persei provides valuable insights into stellar evolution and the characteristics of binary star systems.