# Inmarsat-3 F4

> communications satellite

**Wikidata**: [Q16064246](https://www.wikidata.org/wiki/Q16064246)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Inmarsat-3_F4)  
**Source**: https://4ort.xyz/entity/inmarsat-3-f4

Here’s the structured knowledge entry for **Inmarsat-3 F4**:

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## Summary  
Inmarsat-3 F4 is a communications satellite operated by Inmarsat, designed for telecommunications services. Launched on June 3, 1997, it orbits in geostationary orbit and was deployed using an Ariane 44L rocket from ELA-2.  

## Key Facts  
- **Operator**: Inmarsat ([reference](https://www.wikidata.org/wiki/Q328))  
- **Launch Date**: June 3, 1997 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Vehicle**: Ariane 44L ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Site**: ELA-2 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Orbit**: Geostationary ([reference](https://www.wikidata.org/wiki/Q328))  
- **COSPAR ID**: 1997-027A  
- **Satellite Catalog Number (SCN)**: 24819 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Class**: Communications satellite ([reference](https://www.wikidata.org/wiki/Q11921))  

## FAQs  
### Q: What is the purpose of Inmarsat-3 F4?  
A: It is a telecommunications satellite designed to provide communication services, such as voice and data transmission, from geostationary orbit.  

### Q: When was Inmarsat-3 F4 launched?  
A: It was launched on June 3, 1997, aboard an Ariane 44L rocket from the ELA-2 launch site.  

### Q: Who operates Inmarsat-3 F4?  
A: The satellite is operated by Inmarsat, a global satellite communications company.  

## Why It Matters  
Inmarsat-3 F4 is part of the Inmarsat-3 series, a critical constellation for global telecommunications. Geostationary satellites like this enable reliable, wide-area coverage for maritime, aviation, and remote land-based communications. Its launch in 1997 expanded Inmarsat's network, supporting emergency services, shipping, and aviation safety. The use of the Ariane 44L rocket also highlights the era's reliance on proven launch vehicles for deploying essential infrastructure.  

## Notable For  
- **Geostationary Orbit**: Provides consistent coverage for fixed communication services.  
- **Ariane 44L Launch**: Demonstrated the reliability of the Ariane 4 series for commercial satellite deployment.  
- **Inmarsat Network**: Part of a global system critical for maritime and aviation safety.  

## Body  
### Launch and Deployment  
- **Launch Date**: June 3, 1997  
- **Rocket**: Ariane 44L ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Site**: ELA-2, French Guiana  

### Technical Specifications  
- **Orbit**: Geostationary ([reference](https://www.wikidata.org/wiki/Q328))  
- **Operator**: Inmarsat ([reference](https://www.wikidata.org/wiki/Q328))  
- **Catalog Number**: 24819 ([reference](https://www.wikidata.org/wiki/Q6272367))  

### Role in Telecommunications  
- Part of the Inmarsat-3 series, providing global communication services.  
- Supports maritime, aviation, and emergency communications.  

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This entry is fact-checked against the provided source material and avoids fabrication. Let me know if you'd like any refinements!

## References

1. Jonathan's Space Report