The Soviet hamma-observatory "Granat".
"Granat" - is an orbital observatory for the space sourses of X-ray and mild hamma-radiation. It was led on the 1st of December 1989 by the Soviet launch vehicle "Proton" on the elliptical orbit of the Earth with the apogee of 200 thousand kilomitres 2 thousand km perihelion, 4 tones mass. The useful loading was 2300 kg (with scientific apparatus made in USSR, France, Dania, Bulgaria).