V762 Cassiopeiae
V762 Cassiopeiae is a star in the constellation of Cassiopeia. Its apparent magnitude vary between 5.82 and 5.95, which makes it faintly visible to the naked eye under dark skies. Parallax measurements give it a distance of.
Characteristics
V762 Cassiopeiae has a spectral classification of K5I, suggesting that it is an evolved K-type red supergiant star. Other catalogues have published spectral types of K4, M, and M3II. The Bright Star Catalogue assigned a class of K1V, which originated from one of the earliest observations of this star and was adopted by the General Catalogue of Variable Stars. Recent estimates of the star's physical properties, considering its distance in excess of a thousand light-years, found that it is a red supergiant or asymptotic giant branch star.At an estimated to be ten million years old, has around 16.9 times the Sun's mass and has expanded to 266 times the Sun's radius. It radiates 15,000 times the solar luminosity from its photosphere at an effective temperature of, which gives it an orange-red hue. Parallax measurements from the Gaia spacecraft show that V762 Cassiopeiae is located about 2,500 light-years away. At the estimated distance, V762 Cassiopeiae's apparent brightness is diminished by 1.04 magnitudes due to interstellar extinction.
Hipparcos satellite data showed that the star is variable, and because of that it was given the variable-star designation V762 Cassiopeiae, in 1999. The variability amplitude in visible light is only about 0.1 magnitudes. The star was catalogued as a semi-regular variable.