List of Thor and Delta launches (1980–1989)

This is a list of all orbital and suborbital launches of the Thor and Delta rocket families that occurred between January 1, 1980, and December 31, 1989. These launches primarily originated from launch sites in the United States, including Cape Canaveral Air Force Station and Vandenberg Air Force Base. The Delta rocket, initially derived from the Thor IRBM, served as a reliable workhorse for deploying a variety of payloads, including communications satellites, weather satellites, and scientific probes.

The Thor family, and by extension the Delta, has a long history predating this period. However, this list specifically focuses on the launches conducted within the 1980s. Each entry typically includes the date of the launch, the specific Delta variant used (e.g., Delta 3910, Delta 3920, Delta II), the launch site, and a brief description of the payload or mission objectives.

Significant missions launched during this timeframe using Thor-Delta variants include deployment of Global Positioning System (GPS) satellites, commercial communications satellites for companies like Hughes and RCA, and scientific missions for NASA. The accuracy of launch details, including dates and specific vehicle configurations, can vary depending on the source. References from reputable space agencies, historical launch manifests, and expert publications are crucial for compiling a comprehensive and accurate list.

The decade also saw the introduction of the Delta II rocket, marking a significant upgrade in launch capability compared to earlier Delta models. This newer version incorporated improvements to engine performance and structural design, allowing for heavier payloads and more complex mission profiles. The transition to the Delta II platform occurred progressively throughout the latter half of the 1980s.

This list, when properly compiled and maintained, serves as a historical record of space access capabilities and the evolution of launch vehicle technology during this period. It highlights the important role the Thor and Delta rockets played in advancing space exploration, satellite communications, and scientific research in the 1980s.