# TURKSAT 4B

> 40984

**Wikidata**: [Q111471546](https://www.wikidata.org/wiki/Q111471546)  
**Source**: https://4ort.xyz/entity/turksat-4b-q111471546

## Summary
TURKSAT 4B is a Turkish communications satellite launched in 2015 to provide broadcasting, internet, and telephony services across Europe, Central Asia, and Africa. Operated by Türksat, it is positioned at the 50°E orbital slot and utilizes C-band and Ku-band transponders. The satellite has a 15-year design life and was constructed by Airbus Defence and Space.

## Key Facts
- **NORAD Catalog Number**: 40984
- **Operator**: Türksat (Turkey's national satellite communications company)
- **Launch Date**: October 15, 2015
- **Launch Vehicle**: Ariane 5 (Arianespace)
- **Orbital Position**: 50°E
- **Manufacturer**: Airbus Defence and Space
- **Design Life**: 15 years
- **Transponder Capacity**: C-band and Ku-band transponders
- **Coverage Area**: Europe, Central Asia, Africa, and parts of the Middle East

## FAQs
### Q: When was TURKSAT 4B launched and who operates it?
A: TURKSAT 4B was launched on October 15, 2015, and is operated by Türksat, Turkey's state-owned satellite communications provider.

### Q: What regions does TURKSAT 4B cover?
A: The satellite provides services across Europe, Central Asia, Africa, and parts of the Middle East from its 50°E orbital position.

### Q: What is the expected lifespan of TURKSAT 4B?
A: The satellite was designed for a 15-year operational lifespan in orbit.

## Why It Matters
TURKSAT 4B plays a critical role in Turkey's telecommunications infrastructure, enabling television broadcasting, broadband internet access, and mobile communications across a vast geographic area. By bridging connectivity gaps in regions with limited terrestrial infrastructure, the satellite supports economic development, education, and emergency response efforts. As part of the broader Türksat fleet, it strengthens Turkey's strategic position in the global satellite communications market and ensures reliable cross-continental connectivity for both civilian and governmental users.

## Notable For
- **Advanced Transponder Technology**: Equipped with high-power C-band and Ku-band transponders for flexible service delivery.
- **Strategic Orbital Position**: The 50°E slot optimizes coverage of Europe, Africa, and Asia, serving over 50 countries.
- **Long-Term Reliability**: Designed for 15 years of operation, ensuring sustained service continuity.
- **Collaborative Development**: Built through international partnership between Airbus Defence and Space and Turkish stakeholders.

## Body
### Launch and Deployment
- **Launch Date**: October 15, 2015
- **Launch Site**: Guiana Space Centre, French Guiana
- **Rocket**: Ariane 5 ECA (Flight VA227)
- **Operator**: Arianespace

### Technical Specifications
- **Satellite Bus**: Eurostar E3000 platform
- **Dry Mass**: Approximately 3,460 kg
- **Solar Arrays**: Two deployable panels generating 12 kW of power
- **Propulsion**: Liquid apogee engine for orbital maneuvering

### Orbital Position and Coverage
- **Longitude**: 50° East
- **Antenna Coverage**: 
  - **C-band**: Wide-beam coverage of Europe, Africa, and Central Asia
  - **Ku-band**: High-power spot beams for targeted regional services

### Mission and Operations
- **Primary Services**: 
  - Television broadcasting (direct-to-home and cable headend feeds)
  - Broadband internet access
  - Telephony and VSAT networks
- **Users**: Commercial broadcasters, telecom providers, government agencies

### Legacy and Impact
- **Fleet Integration**: Part of the Türksat constellation, which includes TURKSAT 4A (positioned at 42°E)
- **Economic Contribution**: Supports Turkey's digital economy and regional connectivity initiatives
- **Technological Advancement**: Demonstrates Airbus's Eurostar E3000 bus capabilities in high-throughput satellite missions