Sukhov P. Characteristic properties of the photometry of selected GSS at the small phase angles

There were analyzed dynamic behavior and orientation on the orbits of the dif-ferent classes several GSS. Is supposed the probable reason of the "Cosmos 2397" abnormal functioning. Using the data, that was obtained in 2010 to 2012 yy., is shown that communication GSS "Intelsat 10-02" is functioning normally mode. The data of those observations was reduction from (B, V, R) spectral band to the standard Johnson's broadband system. Was analyzed the error's influence on the accuracy of the GSS features determination. Was described the algorithm of the Efficient Reflection Area (ERA) determination by a way of the observational "short series" of GSS on the small phase angle rates for the related types of the satellites with three types of the platform. Comparing the ERA and other features for the "Intelsat 10-02" and "Sicral" GSS, obtained on this way and the traditional one, i.e. on the "long" series of the observation is shown their equality within error of the calculations. The advantages of the "short" light curves way of the GSS features determination are shown. The time of the GSS identification could be vastly reduced on this way. Were analyzed three models of the Earth shadow: the cone-shaped, the cone-shaped with atmospheric refraction account and the cylindrical. Comparing the calculated times of the entry to, and of the exit from the Earth shadow with observed ones is not found the significant difference between them. On the base of the observations performed from 2004 to 2012 yy. in Odessa, and Slovakia, was formed the photometrical database contained more than 55 GSS including the light curves, the color indices, the dynamic, photometrical and geometric features of these.