# SOLRAD 7B

> solar monitoring satellite

**Wikidata**: [Q9332240](https://www.wikidata.org/wiki/Q9332240)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SOLRAD_7B)  
**Source**: https://4ort.xyz/entity/solrad-7b

## Summary
SOLRAD 7B was a U.S. solar monitoring satellite launched in 1965, designed to study solar radiation while also operating as a covert reconnaissance satellite for intelligence-gathering purposes. It was part of a series of dual-use missions during the Cold War, combining scientific research with military objectives.

## Key Facts
- **Launch Date**: March 9, 1965
- **Launch Vehicle**: Thor-Agena D
- **Launch Site**: Vandenberg Space Launch Complex 2
- **Satellite Catalog Number (SCN)**: 01291
- **COSPAR ID**: 1965-016D
- **Primary Classification**: Reconnaissance satellite (covert intelligence gathering)
- **Secondary Role**: Solar monitoring
- **Mission Type**: Dual-use (scientific and military)

## FAQs
### Q: What was the primary purpose of SOLRAD 7B?
A: SOLRAD 7B was officially a solar monitoring satellite but also functioned covertly as a reconnaissance satellite for military intelligence, reflecting its dual-use mission during the Cold War.

### Q: When and where was SOLRAD 7B launched?
A: It was launched on March 9, 1965, from Vandenberg Space Launch Complex 2 aboard a Thor-Agena D rocket.

### Q: Why was SOLRAD 7B classified as a reconnaissance satellite?
A: The satellite was designed to covertly collect data for intelligence or military applications, a common practice for U.S. satellites during the Cold War era.

## Why It Matters
SOLRAD 7B represents a critical intersection of scientific research and military strategy during the Cold War. As a solar monitoring satellite, it contributed to understanding solar radiation and its effects on Earth, aiding advancements in space weather science. Its covert role as a reconnaissance satellite underscores the era’s geopolitical tensions, where space-based intelligence gathering was vital for national security. The mission’s dual nature highlights the strategic use of space technology for both peaceful and defense-related objectives, a model that influenced later satellite programs. SOLRAD 7B’s launch on a Thor-Agena D rocket also exemplifies the rapid development of U.S. space capabilities in the 1960s, driven by competition with the Soviet Union.

## Notable For
- **Dual Mission**: Combined solar research with covert reconnaissance, a hallmark of Cold War-era satellite programs.
- **Launch Vehicle**: Utilized the Thor-Agena D, a reliable U.S. orbital launch vehicle of the 1960s.
- **Historical Context**: Part of the broader SOLRAD (Solar Radiation) series, which masked intelligence-gathering activities under scientific objectives.
- **Early Space Surveillance**: Contributed to the development of space-based reconnaissance technologies critical to U.S. military operations.

## Body
### Launch Details
- **Date**: March 9, 1965
- **Launch Site**: Vandenberg Space Launch Complex 2 (Vandenberg AFB, California)
- **Rocket**: Thor-Agena D (a U.S. orbital launch vehicle with 43 documented sitelinks)

### Mission and Classification
- **Primary Function**: Solar monitoring (officially) and reconnaissance (covertly)
- **Classification**: Categorized as a reconnaissance satellite due to its intelligence-gathering role
- **Program Affiliation**: Part of the SOLRAD series, which included satellites with dual scientific/military purposes

### Technical Specifications
- **Satellite Catalog Number (SCN)**: 01291
- **COSPAR ID**: 1965-016D
- **NSSDCA ID**: 1965-016D
- **Wolfram Language Entity Code**: Entity["Satellite", "01291"]

### Historical Context
- **Era**: Launched during the Cold War, reflecting U.S. efforts to leverage space technology for both scientific advancement and military advantage
- **Significance**: Emblematic of the "dual-use" satellite strategy, where civilian science missions provided cover for classified intelligence operations

## References

1. Jonathan's Space Report