# Gorizont 21
**Wikidata**: [Q16061185](https://www.wikidata.org/wiki/Q16061185)  
**Source**: https://4ort.xyz/entity/gorizont-21

Here’s the structured knowledge entry for **Gorizont 21**:

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## Summary  
Gorizont 21 is a Soviet/Russian communications satellite launched in 1990 as part of the Gorizont series. It was carried into orbit by a Proton-K rocket from the Baikonur Cosmodrome. Like other Gorizont satellites, it was designed for telecommunications and broadcasting purposes.

## Key Facts  
- **Launch Date:** November 3, 1990  
- **COSPAR ID:** 1990-094A  
- **Launch Vehicle:** Proton-K rocket  
- **Launch Site:** Baikonur Cosmodrome Site 81/23  
- **Space Tug:** Blok DM-2 (used for orbital insertion)  
- **Satellite Catalog Number (SCN):** 20923  
- **Class:** Gorizont series (Soviet/Russian communications satellites, operational 1978–2000)  
- **Significant Event:** Rocket launch on November 3, 1990, from Baikonur  

## FAQs  
### Q: What was the purpose of Gorizont 21?  
A: Gorizont 21 was a communications satellite used for telecommunications and broadcasting, part of the Soviet/Russian Gorizont series.  

### Q: What rocket launched Gorizont 21?  
A: It was launched aboard a Proton-K rocket, a Soviet/Russian heavy-lift launch vehicle.  

### Q: Where was Gorizont 21 launched from?  
A: It lifted off from Baikonur Cosmodrome Site 81/23, a major Soviet/Russian spaceport.  

## Why It Matters  
Gorizont 21 was part of a long-running series of Soviet/Russian communications satellites that played a crucial role in telecommunications and broadcasting during the late Cold War and post-Soviet era. The Gorizont series enabled television, radio, and data transmission across vast regions, supporting both civilian and military communications. Its launch underscored the continued reliance on Proton-K rockets for deploying heavy payloads into geostationary orbit, maintaining Soviet (and later Russian) capabilities in space-based communications.  

## Notable For  
- **Continuity:** Part of the Gorizont series, which spanned over two decades (1978–2000).  
- **Reliable Launch Vehicle:** Deployed via Proton-K, a workhorse of Soviet/Russian space missions.  
- **Orbital Insertion:** Used Blok DM-2, a proven space tug for precise orbital placement.  

## Body  
### Launch Details  
- **Date:** November 3, 1990  
- **Vehicle:** Proton-K rocket  
- **Site:** Baikonur Cosmodrome Site 81/23  

### Technical Specifications  
- **Space Tug:** Blok DM-2 (orbital insertion stage)  
- **Catalog Number:** 20923 (Satellite Catalog Number)  
- **COSPAR Designation:** 1990-094A  

### Classification  
- **Instance Of:** Gorizont-class satellite  
- **Series Duration:** 1978–2000  

### Significant Event  
- **Rocket Launch:** Occurred on November 3, 1990, from Baikonur Cosmodrome Site 81/23.  

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

## References

1. Jonathan's Space Report