Military Satellite Tracker — Defense and Reconnaissance Satellites

Military satellites provide critical capabilities for national defense including communications, missile warning, weather observation, navigation, and reconnaissance. The United States, Russia, China, and other spacefaring nations maintain extensive fleets of defense satellites in various orbits from low Earth orbit to geostationary.

This page shows one specific slice of that fleet: the objects CelesTrak publishes in its military group. It is a short, openly identified list — radar-reconnaissance satellites such as Germany's SAR-Lupe series, space-surveillance satellites such as Canada's Sapphire, and the US Space Development Agency's tracking-layer spacecraft.

Most well-known defense programs are not in this group. Military weather, missile-warning, and wideband communications satellites are catalogued under other groups, and classified payloads are not identified in the public catalog at all, so treat this page as a sample of openly tracked defense assets rather than a complete order of battle.