A dynamical one may be taken by first applying Kepler's third law and the mass-luminosity relation for a binary system. Spectral and luminosity class data are employed with a Hertzsprung-Russell diagr
A dynamical one may be taken by first applying Kepler's third law and the mass-luminosity relation for a binary system. Spectral and luminosity class data are employed with a Hertzsprung-Russell diagram and the distance modulus in the spectroscopic type. Generally, it relies on taking two measurements separated by six months of a star's position, finding the angle that separates them, and relying on the small angle approximation. For 10 points, identify this method of distance determination, whose namesake unit is around three point two six lightyears.
A dynamical one may be taken by first applying Kepler's third law and the mass-luminosity relation for a binary system.