# Cosmos 684
**Wikidata**: [Q13566897](https://www.wikidata.org/wiki/Q13566897)  
**Source**: https://4ort.xyz/entity/cosmos-684

## Summary
Cosmos 684 is a Strela-1M satellite launched on September 19, 1974, from the Plesetsk Cosmodrome Site 132 using a Kosmos-3M rocket. It is identified by the COSPAR ID 1974-072H and the satellite catalog number 07442. The mission was part of the Soviet Union's space program, and it is notable for its classification as a Strela-1M satellite.

## Key Facts
- **Launch Date**: September 19, 1974
- **Launch Vehicle**: Kosmos-3M
- **Launch Site**: Plesetsk Cosmodrome Site 132
- **COSPAR ID**: 1974-072H
- **Satellite Catalog Number**: 07442
- **Classification**: Strela-1M satellite
- **Country of Origin**: Soviet Union (later Russia)
- **Wikipedia Availability**: Available in Macedonian (mk), Serbo-Croatian (sh), and Serbian (sr)
- **Wolfram Language Entity Code**: `Entity["Satellite", "07442"]`

## FAQs
**What type of satellite was Cosmos 684?**
Cosmos 684 was a Strela-1M satellite, a classification of military reconnaissance or communication satellite used by the Soviet Union.

**Where and when was Cosmos 684 launched?**
Cosmos 684 was launched on September 19, 1974, from Plesetsk Cosmodrome Site 132 using a Kosmos-3M rocket.

**What is the COSPAR ID of Cosmos 684?**
The COSPAR ID for Cosmos 684 is 1974-072H.

**Which rocket was used to launch Cosmos 684?**
Cosmos 684 was launched using the Kosmos-3M rocket.

**Is there a Wikipedia page for Cosmos 684?**
Yes, Wikipedia pages for Cosmos 684 are available in Macedonian, Serbo-Croatian, and Serbian.

## Why It Matters
Cosmos 684 represents a significant entry in the Soviet Union's space program, particularly within the Strela-1M satellite series. The Strela-1M satellites were likely used for military purposes, such as reconnaissance or secure communications, given their classification. The launch and operation of Cosmos 684 contribute to the broader historical record of the Soviet space program, which played a pivotal role in early space exploration and satellite technology. While specific details about its mission are classified, its inclusion in the Kosmos series underscores the Soviet Union's efforts to maintain a robust space presence during the Cold War era.

## Notable For
- **First Launch of Strela-1M Series**: Cosmos 684 was one of the earliest launches in the Strela-1M satellite series, contributing to the Soviet Union's military space capabilities.
- **Kosmos-3M Rocket Utilization**: The mission marked a use of the Kosmos-3M rocket, which was integral to the Soviet Union's early satellite deployment efforts.
- **Plesetsk Cosmodrome Site 132**: The launch site, Plesetsk Cosmodrome Site 132, was a key facility for Soviet space operations, particularly for military satellites.

## Body
### Mission Overview
Cosmos 684 was launched on September 19, 1974, at 14:57:00 UTC from Plesetsk Cosmodrome Site 132. The satellite was deployed using a Kosmos-3M rocket, a variant of the R-14 launch vehicle. The mission was part of the Soviet Union's broader satellite program, which included the deployment of military satellites for reconnaissance and communications.

### Classification and Purpose
Cosmos 684 is classified as a Strela-1M satellite. The Strela-1M series was likely used for military purposes, such as reconnaissance or secure communications, given the Soviet Union's emphasis on maintaining a covert space presence during the Cold War. The satellite's specific role remains classified, but its inclusion in the Kosmos series indicates its association with the Soviet military space program.

### Technical Specifications
- **Satellite Catalog Number**: 07442
- **COSPAR ID**: 1974-072H
- **Launch Vehicle**: Kosmos-3M
- **Launch Site**: Plesetsk Cosmodrome Site 132

### Historical Context
The launch of Cosmos 684 occurred during a period of intense Cold War competition, with both the Soviet Union and the United States actively pursuing advancements in space technology. The Kosmos-3M rocket, used for this mission, was part of a family of launch vehicles designed to deploy small satellites, including reconnaissance and communications payloads.

### Wikipedia Availability
Wikipedia pages for Cosmos 684 are available in Macedonian (mk), Serbo-Croatian (sh), and Serbian (sr), reflecting its relevance in those linguistic communities. The availability of these pages indicates the satellite's historical significance and the interest it has generated in different regions.

### Wolfram Language Entity
Cosmos 684 is referenced in the Wolfram Language as `Entity["Satellite", "07442"]`, highlighting its inclusion in computational knowledge systems and its potential for further research and analysis.

### Related Entities
- **Kosmos-3M**: The launch vehicle used for Cosmos 684, part of the Soviet Union's early satellite deployment efforts.
- **Plesetsk Cosmodrome Site 132**: The launch site, which was a key facility for Soviet military space operations.
- **Strela-1M**: The satellite classification, indicating its likely military use for reconnaissance or communications.

### Conclusion
Cosmos 684 is a notable entry in the Soviet Union's space program, representing the deployment of a Strela-1M satellite using the Kosmos-3M rocket. While specific details about its mission remain classified, its inclusion in the Kosmos series underscores the Soviet Union's efforts to maintain a robust space presence during the Cold War. The satellite's launch and operation contribute to the broader historical record of early space exploration and satellite technology.

## References

1. Jonathan's Space Report