I was at a pch, located in agua doce, sc, photographing the night sky. in addition to stars, i observed commercial airplanes, satellites and meteors. at one point what i thought was a satellite, abruptly changed direction by 45 degrees, repeating this movement with a trajectory in zig zag. the speed was a little lower than the commercial planes, the movement was very peculiar, detachable from any other celestial body. i directed my camera to try to capture the movement, during the exposure time of the photograph (60s) the object increased the intensity of the brightness and accelerated very fast disappearing. -26.676906, -51.721535