Some model dependences of the planetary refractive angle and its derivative on the height of the perigee of the viewing ray are calculated employing the models of vertical air density profiles available from the literature. The formulas are given for calculating the coefficient of the light flux extinction due to refraction when viewing the extraterrestrial light sources through the atmosphere from satellite. The developed model may be employed to estimate the hight of the perigee of the viewing ray from the measurements of the atmospheric refraction angles, in particular, to solve the problems of autonomous satellite navigation.