astr529

Astr529 is a star located in the constellation of Cassiopeia. It is a variable star, specifically a Cepheid variable, which means its brightness varies over time. Cepheid variables are important in astronomy because their period of variability is directly related to their intrinsic brightness, making them useful for measuring distances in the universe. Astr529 has a period of approximately 5.36 days, which corresponds to an absolute magnitude of about -2.5. Its apparent magnitude varies between 8.5 and 9.5, making it visible with a small telescope or binoculars under dark skies. The star is located about 1,500 light-years away from Earth. Astr529 is part of the open cluster NGC 7789, also known as Caroline's Rose. The cluster is estimated to be about 1.6 billion years old and contains over 100 stars. Astr529 is not to be confused with the more famous Cepheid variable star Delta Cephei, which is located in the constellation Cepheus.