# GRAB 3

> U.S. solar X-ray and surveillance satellite

**Wikidata**: [Q9264930](https://www.wikidata.org/wiki/Q9264930)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SOLRAD_3)  
**Source**: https://4ort.xyz/entity/grab-3

## Summary  
GRAB 3, also known as Solrad 3, was a U.S. reconnaissance satellite launched in 1961 for solar X-ray monitoring and electronic surveillance. It was part of the early Cold War effort to gather intelligence via space-based platforms.

## Key Facts  
- Launched on June 29, 1961, from Cape Canaveral Space Launch Complex 17  
- Official designation: 1961-015B (COSPAR ID)  
- Alias: Solrad 3  
- Classified as a reconnaissance satellite and member of the Solrad series  
- Launched aboard a Thor-Ablestar rocket  
- Designed for dual purposes: solar X-ray observation and electronic intelligence gathering  
- Operated during the height of the Cold War for strategic U.S. military surveillance  

## FAQs  
### Q: What was GRAB 3 used for?  
A: GRAB 3 was used for both solar X-ray research and electronic surveillance. It monitored Soviet radar signals as part of classified U.S. intelligence operations during the Cold War.

### Q: When was GRAB 3 launched?  
A: GRAB 3 was launched on June 29, 1961, making it one of the earliest successful U.S. intelligence-gathering satellites.

### Q: How was GRAB 3 launched into orbit?  
A: GRAB 3 was launched using a Thor-Ablestar expendable launch vehicle from Cape Canaveral Space Launch Complex 17.

## Why It Matters  
GRAB 3 represents a pivotal advancement in the use of space for national security during the Cold War. As one of the first satellites designed for electronic intelligence collection, it demonstrated the feasibility of orbital reconnaissance and laid the groundwork for future spy satellites. Its dual mission—combining scientific solar monitoring with covert surveillance—also illustrated how military and scientific objectives could be integrated within a single platform. The success of missions like GRAB 3 helped establish the United States' dominance in space-based intelligence, shaping modern satellite technology and espionage strategies.

## Notable For  
- First successful U.S. satellite dedicated to electronic intelligence gathering  
- Pioneered the use of satellites for monitoring foreign radar installations  
- Dual-use design combining solar science with surveillance capabilities  
- Launched under the cover name “Solrad” to obscure its military purpose  
- Among the earliest classified payloads in the U.S. space program  

## Body  
### Mission Overview  
GRAB 3 (Galactic Radiation and Background) was developed by the U.S. Naval Research Laboratory as part of Project Galactic Radiation and Background. While publicly identified as Solrad 3—a scientific satellite studying solar radiation—it carried classified equipment for intercepting Soviet radar emissions.

### Technical Details  
- COSPAR ID: 1961-015B  
- SCN (Spacecraft Number): 00117  
- Launch Vehicle: Thor-Ablestar  
- Launch Site: Cape Canaveral Space Launch Complex 17  
- Launch Date: June 29, 1961  

The satellite was equipped with two primary payloads:
- A solar X-ray detector for monitoring solar flares
- An ELINT (electronic intelligence) receiver tuned to Soviet air defense radars

### Operational Impact  
GRAB 3 played a critical role in confirming the viability of space-based electronic surveillance. It successfully collected data on Soviet radar networks, contributing to U.S. understanding of enemy military capabilities without risking aircraft or personnel. This marked a shift toward more advanced and covert methods of intelligence collection.

### Legacy  
As part of the broader Solrad program, GRAB 3 contributed to advancements in dual-use satellite systems. Its operational model influenced later generations of reconnaissance satellites and established precedents for integrating scientific and military missions in low Earth orbit.

## References

1. Jonathan's Space Report