Estimating Fundamental Parameters of Celestial Objects Using Some Observational Parameters

Abstract: Far away objects seem to appear smaller than the original size. There is confusion about the concept of the perceived size of objects based on distance. In this work, new mathematical formulae are given for the apparent size of objects in both isoscele view and scalene view in terms of absolute distance. The new formulae for the temperature of black bodies and the true diameter of luminous objects are obtained from the apparent size relations. The present study will highlight the diameter of luminous objects and the expression for the temperature of black bodies. Keywords: Apparent size, Appearance, Isoscele view, Scalene view.