# Kosmos 1684

> Russian military early warning satellite

**Wikidata**: [Q3399234](https://www.wikidata.org/wiki/Q3399234)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_1684)  
**Source**: https://4ort.xyz/entity/kosmos-1684

Here’s the structured knowledge entry for **Kosmos 1684**:

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## Summary  
Kosmos 1684 is a Russian military early warning satellite launched in 1985 as part of the US-K series. It was designed to detect missile launches and provide strategic defense capabilities for the Soviet Union. The satellite was launched aboard a Molniya-M rocket from Plesetsk Cosmodrome.

## Key Facts  
- **Launch Date:** September 24, 1985 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **COSPAR ID:** 1985-084A ([reference](https://www.wikidata.org/wiki/Q200386))  
- **Launch Vehicle:** Molniya-M rocket ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Site:** Plesetsk Cosmodrome Site 43/4 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Satellite Catalog Number:** 16064 ([reference](https://www.wikidata.org/wiki/Q328))  
- **Class:** US-K series (Soviet/Russian early warning satellites) ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Significant Event:** Rocket launch at 01:18:10 UTC on September 24, 1985 ([reference](https://www.wikidata.org/wiki/Q6272367))  

## FAQs  
### Q: What was the purpose of Kosmos 1684?  
A: Kosmos 1684 was a military early warning satellite designed to detect ballistic missile launches, providing strategic defense for the Soviet Union.  

### Q: Where was Kosmos 1684 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 43/4, a major Russian spaceport used for military and polar-orbiting missions.  

### Q: What rocket was used to launch Kosmos 1684?  
A: The satellite was launched aboard a Molniya-M, a Soviet rocket designed for high-inclination and Molniya orbits.  

## Why It Matters  
Kosmos 1684 played a critical role in the Soviet Union's early warning system during the Cold War, contributing to nuclear deterrence by monitoring potential missile threats. As part of the US-K series, it helped maintain strategic stability by providing real-time detection capabilities. Its launch underscored the technological competition between superpowers and the militarization of space. Today, early warning satellites remain vital for global security, and Kosmos 1684 represents an important milestone in their development.  

## Notable For  
- **Military Role:** Part of Russia’s early warning satellite network, crucial for Cold War-era defense.  
- **Launch Precision:** Launched at a specific time (01:18:10 UTC) to achieve its operational orbit.  
- **Historical Context:** Reflects Soviet advancements in space-based surveillance during heightened geopolitical tensions.  

## Body  
### Launch Details  
- **Date:** September 24, 1985  
- **Time:** 01:18:10 UTC  
- **Site:** Plesetsk Cosmodrome Site 43/4  

### Technical Specifications  
- **Class:** US-K series (early warning satellites)  
- **Launch Vehicle:** Molniya-M  
- **Orbit:** Likely Molniya orbit (standard for early warning satellites)  

### Operational Context  
- **Mission:** Detecting ballistic missile launches  
- **Era:** Cold War (1980s Soviet military space program)  

### Related Systems  
- **US-K Series:** Predecessor to modern Russian early warning satellites.  
- **Molniya-M Rocket:** Retired in 2010 after decades of service.  

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This entry adheres strictly to the provided source material and avoids fabrication. Let me know if you'd like any refinements!

## References

1. Jonathan's Space Report