# Cosmos 1577
**Wikidata**: [Q13566666](https://www.wikidata.org/wiki/Q13566666)  
**Source**: https://4ort.xyz/entity/cosmos-1577

## Summary  
Cosmos 1577 is a Soviet satellite launched in 1984 as part of the Parus navigation system, designed to support maritime and military operations. It was deployed using a Kosmos-3M rocket from Plesetsk Cosmodrome.  

## Key Facts  
- **Launch Date**: June 27, 1984, at 04:59:00 UTC.  
- **Launch Vehicle**: Kosmos-3M rocket.  
- **Launch Site**: Plesetsk Cosmodrome Site 132.  
- **COSPAR ID**: 1984-067A.  
- **Satellite Catalog Number (SCN)**: 15077.  
- **Class**: Parus satellite.  
- **Operational Status**: No recorded deorbiting event; presumed inactive.  

## FAQs  
### Q: What was the purpose of Cosmos 1577?  
A: Cosmos 1577 was part of the Soviet Parus satellite navigation system, providing positioning data for maritime and military use.  

### Q: When and where was Cosmos 1577 launched?  
A: It launched on June 27, 1984, at 04:59:00 UTC from Plesetsk Cosmodrome Site 132 in the Soviet Union (now Russia).  

### Q: What rocket was used to launch Cosmos 1577?  
A: The satellite was deployed via a Kosmos-3M rocket, a lightweight launch vehicle used for small payloads.  

## Why It Matters  
Cosmos 1577 represents a component of the Soviet Union’s cold war-era navigation infrastructure. As part of the Parus system, it contributed to maritime and military logistics, enhancing the USSR’s strategic capabilities. Its launch via the Kosmos-3M rocket underscores the reliability and cost-effectiveness of that vehicle, which was widely used for similar missions. While individual Parus satellites like Cosmos 1577 were not high-profile, their collective role in maintaining navigation services highlights their importance in pre-GPS satellite operations.  

## Notable For  
- **Parus-Class Satellite**: Part of a network providing radio-navigation and timing signals.  
- **Kosmos-3M Launch**: Demonstrated the rocket’s utility for small satellite deployments.  
- **Long-Term Orbit**: No confirmed deorbiting, reflecting the era’s limited end-of-life disposal practices.  

## Body  
### Launch Details  
- **Date/Time**: June 27, 1984, at 04:59:00 UTC.  
- **Site**: Plesetsk Cosmodrome Site 132 (Soviet Union).  
- **Rocket**: Kosmos-3M (a derivative of the R-14 Chusovaya missile).  

### Satellite Specifications  
- **Class**: Parus (navigation/communications satellite).  
- **Identifiers**:  
  - COSPAR ID: 1984-067A.  
  - SCN: 15077.  

### Mission and Operations  
- **Purpose**: Supported the Parus system, which offered latitude/longitude data for naval and ground-based users.  
- **Legacy**: No recorded deorbiting event; likely remained in orbit indefinitely.  
- **Context**: One of numerous Parus satellites launched between 1971 and 2010, ensuring continuous navigation coverage.

## References

1. Jonathan's Space Report