Methods for the Calculation of Unsteady-State Thermal Conditions of Isothermal Space Objects

Methods for the determination of temperatures of objects in circumterrestrial space using a multispectrum IR-radiometer against cold space background

“…In view of the previously derived relations [4], we represent the expressions for X i and D i in the form ,…”

“…where σ 0 = 5.67 W/(m 2 K 4 ) is the reduced StefanBoltzmann constant; μ i is the fraction of energy of radiation of Earth illumination in the ith spectral range; and Q is the integral flux of Earth radiation in W/m 2 , the procedure of whose calculation is described in [4].…”