CUTE-1.7 + APD (Cubical Tokyo Tech Engineering satellite 1.7 plus Avalanche Photodiode) or CO-56 (Cubesat-Oscar-56) or just OSCAR 56 was an amateur radio
commonly pronounced cuteCUTE-1.7 + APD, an amateur radio satellite operated by the Tokyo Institute of Technology CUTE-1.7 + APD II Colorado Ultraviolet