# Cosmos 1840
**Wikidata**: [Q12753477](https://www.wikidata.org/wiki/Q12753477)  
**Source**: https://4ort.xyz/entity/cosmos-1840

## Summary
Cosmos 1840 is a GLONASS navigation satellite launched by the Soviet Union in 1987. It was part of the original GLONASS family and deployed using a Proton-K rocket from the Baikonur Cosmodrome. The satellite played a role in the Soviet/Russian global navigation system.

## Key Facts
- **Launch Date:** April 24, 1987 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **COSPAR ID:** 1987-036C ([reference](https://www.wikidata.org/wiki/Q200386))  
- **Launch Vehicle:** Proton-K ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Space Tug:** Blok DM-2 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Site:** Baikonur Cosmodrome Site 200 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Satellite Catalog Number (SCN):** 17904 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Aliases:** Kosmos 1840 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Significant Event:** Rocket launch at 12:42:54 UTC ([reference](https://www.wikidata.org/wiki/Q6272367))  

## FAQs
### Q: What was Cosmos 1840's role in the GLONASS system?  
A: It was part of the original GLONASS satellite family, contributing to the Soviet/Russian global navigation network.  

### Q: Where was Cosmos 1840 launched from?  
A: It launched from Baikonur Cosmodrome Site 200 in Kazakhstan.  

### Q: What rocket carried Cosmos 1840 into orbit?  
A: A Proton-K rocket with a Blok DM-2 upper stage deployed the satellite.  

## Why It Matters
Cosmos 1840 was a key component of the GLONASS system, the Soviet Union's answer to the U.S. GPS network. Its launch marked progress in global satellite navigation, enabling military and civilian positioning services. The GLONASS constellation improved global coverage and redundancy, influencing later navigation technologies.  

## Notable For
- Part of the original GLONASS satellite series  
- Launched aboard a Proton-K, a workhorse of Soviet space missions  
- Contributed to early global navigation infrastructure  

## Body
### Launch Details  
- **Date:** April 24, 1987  
- **Time:** 12:42:54 UTC  
- **Site:** Baikonur Cosmodrome Site 200  

### Technical Specifications  
- **Spacecraft Type:** GLONASS navigation satellite  
- **Upper Stage:** Blok DM-2  

### Orbital Deployment  
- **Catalog Number:** 17904  
- **COSPAR Designation:** 1987-036C  

### Related Systems  
- **Launch Vehicle:** Proton-K  
- **Navigation Family:** GLONASS

## References

1. Jonathan's Space Report