The GAMMA satellite, also known as Gamma No. 1L, was launched on July 11, 1990, from Launch Pad LC1 at the TYSMC site using a Soyuz-U2 launch vehicle. Built by NPOE for astronomy and gamma-ray observations, it has a configuration similar to the Soyuz-Bus with dimensions of 7.7 meters in length, 2.7 meters in diameter, and an 8-meter span. The satellite has a dry mass of 7000 kilograms and a launch mass of 7320 kilograms. Its power system consists of two deployable solar arrays and batteries. GAMMA features a cylindrical shape with two panels and a radar cross section (RCS) value of 26.4223 square meters. The satellite's ownership is attributed to NPOE, and it was designed for astronomical gamma-ray missions.