The HADES-D (SO-121) satellite, also known as HADES-D, is a PocketQube 1.5P technology demonstration spacecraft manufactured by AMEA/HYDRA for the owner AMEA. It was launched on November 11, 2023, from AFWTR SLC4E using a Falcon 9 launch vehicle. The satellite measures 0.075 meters in length and has a diameter of 0.05 meters with a span of 0.5 meters. Weighing 0.375 kilograms at launch and dry mass, it is equipped with solar cells and batteries for power. Its shape consists of a box design with two antennas. The satellite's primary mission is technology demonstration, and it reached stability on November 28, 2023.