# Cosmos 1878
**Wikidata**: [Q12907516](https://www.wikidata.org/wiki/Q12907516)  
**Source**: https://4ort.xyz/entity/cosmos-1878

## Summary  
Cosmos 1878 is a Soviet-era Strela-3 military communications satellite launched in 1987 to support secure communications for Ukrainian and Soviet forces. It was deployed via a Tsyklon-3 rocket from Plesetsk Cosmodrome, forming part of a constellation of satellites designed for strategic military use.  

## Key Facts  
- **Launch Date**: September 7, 1987  
- **Launch Vehicle**: Tsyklon-3 expendable rocket  
- **Launch Site**: Plesetsk Cosmodrome Site 32  
- **COSPAR ID**: 1987-074D  
- **Satellite Catalog Number (SCN)**: 18337  
- **Class**: Strela-3 military communications satellite  
- **Launch Time**: 23:50:09 UTC  
- **Operational Role**: Part of a network for encrypted military communications  

## FAQs  
### Q: What was the primary purpose of Cosmos 1878?  
A: Cosmos 1878 was a military communications satellite designed to provide secure transmission capabilities for Soviet and Ukrainian forces as part of the Strela-3 constellation.  

### Q: When and where was Cosmos 1878 launched?  
A: It launched on September 7, 1987, at 23:50:09 UTC from Plesetsk Cosmodrome Site 32 aboard a Tsyklon-3 rocket.  

### Q: What type of satellite was Cosmos 1878?  
A: It belonged to the Strela-3 class, a series of satellites used for military communications within the Soviet and later Ukrainian armed forces.  

## Why It Matters  
Cosmos 1878 represents a critical component of Cold War-era military infrastructure, enabling encrypted communications for strategic operations. As part of the Strela-3 network, it underscored the Soviet Union’s reliance on satellite technology for maintaining command and control over vast geographic areas. The use of the Tsyklon-3 launch vehicle also highlights the technological capabilities of the Soviet space program during the 1980s. While individual Strela-3 satellites like Cosmos 1878 were not publicly high-profile, their collective role in military logistics and coordination was vital to Soviet strategic interests.  

## Notable For  
- **Strela-3 Constellation Member**: Part of a series of satellites tasked with secure military communications.  
- **Tsyklon-3 Launch**: Utilized a Soviet-era rocket known for deploying satellites into low Earth orbit.  
- **Cold War-Era Asset**: Exemplifies the integration of space-based assets into military operations during the 1980s.  

## Body  
### Launch Details  
- **Date/Time**: September 7, 1987, at 23:50:09 UTC  
- **Site**: Plesetsk Cosmodrome Site 32 (a frequent launch point for Soviet military satellites)  
- **Vehicle**: Tsyklon-3 (a liquid-fueled rocket used for payloads like Strela-3 satellites)  

### Satellite Specifications  
- **Class**: Strela-3 (Ukrainian/Russian military communications satellite)  
- **Identifiers**:  
  - **COSPAR ID**: 1987-074D  
  - **SCN**: 18337  
- **Mission**: Secure voice and data relay for military units  

### Mission Context  
The satellite operated as part of a broader network designed to ensure communication continuity for Soviet forces. Strela-3 satellites typically operated in low Earth orbit, providing coverage for specific regions or missions. Cosmos 1878’s deployment reflected the Soviet military’s emphasis on redundant and resilient communication systems during the late Cold War period.

## References

1. Jonathan's Space Report