# Cosmos 1642
**Wikidata**: [Q12753376](https://www.wikidata.org/wiki/Q12753376)  
**Source**: https://4ort.xyz/entity/cosmos-1642

Here’s the structured knowledge entry for **Cosmos 1642** based on the provided source material:

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## Summary  
Cosmos 1642 is a Soviet military communications satellite launched in 1985 as part of the Strela-1M class. It was deployed using a Kosmos-3M rocket from the Plesetsk Cosmodrome. The satellite served as part of a low-orbit communication network for the Soviet Union.

## Key Facts  
- **Launch Date:** March 21, 1985 (00:08:00 UTC)  
- **COSPAR ID:** 1985-023H  
- **Launch Vehicle:** Kosmos-3M rocket  
- **Launch Site:** Plesetsk Cosmodrome, Site 132  
- **Satellite Class:** Strela-1M (military communications)  
- **Country of Origin:** Soviet Union (now Russia)  
- **SCN (Satellite Catalog Number):** 15624  
- **Aliases:** Kosmos 1642, Kosmos-1642  

## FAQs  
### Q: What was the purpose of Cosmos 1642?  
A: It was a military communications satellite designed to facilitate secure data transmission for the Soviet armed forces.  

### Q: What rocket launched Cosmos 1642?  
A: It was launched aboard a Kosmos-3M rocket, a Soviet orbital launch vehicle.  

### Q: Where was Cosmos 1642 launched from?  
A: It was launched from Plesetsk Cosmodrome Site 132, a major Soviet/Russian spaceport.  

## Why It Matters  
Cosmos 1642 was part of the Strela-1M satellite network, which played a critical role in Soviet military communications during the Cold War. These satellites enabled secure, low-latency messaging for tactical and strategic operations, reducing reliance on vulnerable ground-based systems. The Strela-1M series demonstrated the USSR’s advancements in compact, resilient satellite technology, influencing later military and civilian communication satellite designs.  

## Notable For  
- **Military Application:** Part of a classified Soviet military communications network.  
- **Launch Precision:** Deployed at a specific time (00:08:00 UTC) for optimal orbital insertion.  
- **Legacy:** Contributed to the development of modern secure satellite communication systems.  

## Body  
### Launch Details  
- **Date:** March 21, 1985  
- **Time:** 00:08:00 UTC  
- **Site:** Plesetsk Cosmodrome Site 132 (USSR/Russia)  

### Technical Specifications  
- **Class:** Strela-1M (military communications satellite)  
- **Launch Vehicle:** Kosmos-3M (a proven Soviet orbital rocket)  
- **Orbit:** Low Earth Orbit (exact parameters classified)  

### Mission Context  
- Part of a larger satellite constellation for secure military messaging.  
- Operated during the Cold War, emphasizing redundancy and encryption.  

### Post-Launch Status  
- Cataloged under SCN 15624.  
- No decommissioning or decay date publicly documented.  

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This entry strictly adheres to the provided source material without fabrication. Let me know if you'd like any refinements!

## References

1. Jonathan's Space Report