# Kosmos 665

> Russian military early warning satellite

**Wikidata**: [Q3400811](https://www.wikidata.org/wiki/Q3400811)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kosmos_665)  
**Source**: https://4ort.xyz/entity/kosmos-665

Here’s the structured knowledge entry for **Kosmos 665**:

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## Summary  
Kosmos 665 was a Russian military early warning satellite launched in 1974 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:** June 29, 1974  
- **COSPAR ID:** 1974-050A  
- **Satellite Catalog Number (SCN):** 07352  
- **Launch Vehicle:** Molniya-M  
- **Launch Site:** Plesetsk Cosmodrome Site 41  
- **Class:** US-K (Soviet/Russian early warning satellite series)  
- **Mission:** Military early warning (missile detection)  
- **Significant Event:** Launched at 15:59:58 UTC  

## FAQs  
### Q: What was the purpose of Kosmos 665?  
A: Kosmos 665 was a military early warning satellite designed to detect ballistic missile launches, providing strategic defense intelligence for the Soviet Union.  

### Q: Where was Kosmos 665 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 41, a major Soviet/Russian spaceport used for military and polar-orbiting missions.  

### Q: What rocket was used to launch Kosmos 665?  
A: The satellite was launched aboard a Molniya-M rocket, a Soviet launch vehicle commonly used for high-inclination and Molniya-orbit missions.  

## Why It Matters  
Kosmos 665 played a critical role in the Soviet Union's early warning system during the Cold War, enhancing its ability to detect potential missile threats from adversaries. As part of the US-K series, it contributed to the broader Oko (Eye) program, which aimed to provide real-time surveillance of ballistic missile activity. Early warning satellites like Kosmos 665 were vital for maintaining nuclear deterrence and strategic stability, reducing the risk of surprise attacks. Its launch underscored the technological and military competition between the USSR and the United States during this period.  

## Notable For  
- **Early Warning Role:** Part of the US-K series, a key component of Soviet missile defense strategy.  
- **Cold War Significance:** Launched during heightened tensions between superpowers.  
- **Technical Legacy:** Demonstrated Soviet advancements in satellite-based surveillance.  

## Body  
### Launch Details  
- **Date:** June 29, 1974  
- **Time:** 15:59:58 UTC  
- **Site:** Plesetsk Cosmodrome Site 41  
- **Rocket:** Molniya-M  

### Mission Profile  
- **Class:** US-K (early warning satellite)  
- **Function:** Detecting ballistic missile launches using infrared sensors  
- **Orbit:** Likely Molniya orbit (highly elliptical, 12-hour period)  

### Technical Specifications  
- **Catalog Number:** 07352  
- **COSPAR Designation:** 1974-050A  

### Historical Context  
- Part of the Soviet Oko program, which operated from the 1970s to the 2010s.  
- Contributed to the USSR's strategic defense infrastructure during the Cold War.  

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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