# DMSP Block 3 F1
**Wikidata**: [Q9200504](https://www.wikidata.org/wiki/Q9200504)  
**Source**: https://4ort.xyz/entity/dmsp-block-3-f1

## Summary
DMSP Block 3 F1 was an early weather satellite launched by the United States in 1965. It was part of the Defense Meteorological Satellite Program (DMSP) Block 3 series, utilizing a Thor-Burner launch vehicle.

## Key Facts
- **Type**: Weather Satellite (DMSP Block 3 F1)
- **Launch Date**: 1965-05-20
- **Launch Vehicle**: Thor-Burner
- **Launch Site**: Vandenberg Launch Complex 4300 C-6
- **COSPAR ID**: 1965-038A
- **SCN (Satellite Catalog Number)**: 01377
- **Significant Event**: Rocket Launch on 1965-05-20 at Vandenberg Launch Complex 4300 C-6
- **Wikipedia Languages Available**: Polish

## FAQs
### Q: What was DMSP Block 3 F1?
A: DMSP Block 3 F1 was a weather satellite launched by the United States on May 20, 1965, as part of the Defense Meteorological Satellite Program (DMSP).

### Q: When and where was DMSP Block 3 F1 launched?
A: It was launched on May 20, 1965, from Vandenberg Launch Complex 4300 C-6.

### Q: What launch vehicle was used for DMSP Block 3 F1?
A: The Thor-Burner expendable launch system was used for the mission.

### Q: What was the purpose of DMSP Block 3 F1?
A: It was designed to monitor weather and climate as part of the DMSP series.

## Why It Matters
DMSP Block 3 F1 represents a significant early step in the development of dedicated military weather satellites by the United States. Launched during the Cold War, it contributed to the ongoing effort to provide accurate meteorological data for military operations, including reconnaissance, strategic planning, and tactical support. This satellite was part of the foundational DMSP program that evolved into a critical space-based weather monitoring capability, demonstrating the operational value of dedicated satellites for military meteorology over relying solely on civilian systems.

## Notable For
- Being an early satellite in the DMSP Block 3 series (model F1).
- Utilizing the Thor-Burner launch vehicle for its maiden flight in 1965.
- Launching specifically from Vandenberg Launch Complex 4300 C-6.
- Being classified under the core weather satellite functional class.
- Being identifiable by its specific COSPAR ID (1965-038A) and Satellite Catalog Number (01377).

## Body
### Identification
-   **Entity**: DMSP Block 3 F1
-   **Class**: Weather Satellite
-   **Instance Of**: Weather Satellite
-   **COSPAR ID**: 1965-038A
-   **SCN (Satellite Catalog Number)**: 01377
-   **Wikipedia Presence**: 1 sitelink (Polish language)

### Launch
-   **Launch Date**: 1965-05-20
-   **Launch Vehicle**: Thor-Burner
-   **Launch Site**: Vandenberg Launch Complex 4300 C-6
-   **Significant Event**: Rocket Launch (qualified by location: Vandenberg Launch Complex 4300 C-6, time: 1965-05-20)

### Operational Context
-   **Program**: Defense Meteorological Satellite Program (DMSP)
-   **Block/Model**: Block 3 F1
-   **Primary Function**: Monitoring weather and climate.

## References

1. Jonathan's Space Report