Space Docking Experiment (SpaDeX) Mission

The Indian Space Research Organisation (ISRO) has launched the Space Docking Experiment (SpaDeX) mission, marking India’s inaugural attempt at in-orbit satellite docking.

• The mission involves two small spacecraft, the Chaser (SDX01) and the Target (SDX02), each weighing 220 kg, placed in a 470 km circular orbit with a 55° inclination.
• It aims to demonstrate autonomous satellite docking, electric power transfer between docked spacecraft, and control of combined spacecraft after docking.
• Key technologies developed include an inter-satellite communication link, GNSS-based relative orbit determination, docking mechanisms, and autonomous rendezvous strategies.
• The mission marks India’s entry into advanced space capabilities, essential for satellite servicing, space station operations, and human spaceflight missions.