Turkish Satellites: From Communications to Observation
This section covers the history of the Türksat communications fleet. The first launch attempt, first successful satellite, commissioning and domestic development are separate milestones.
The beginnings of satellite operations
Türkiye’s satellite communications expertise dates back to PTT’s work and Intelsat membership in 1968. The AKA-1 ground station entered service in 1979. Türksat AŞ was established in 2004.
Communications and observation are different missions
The Türksat family’s main task is not taking images but carrying communications services such as television broadcasting and data. A geostationary satellite appears in an approximately fixed direction in the sky to ground terminals at appropriate locations. The 6A programme covered here concerns a platform developed for this mission class at an altitude of approximately 35,786 kilometres. Observation satellites’ camera and imaging achievements belong in a separate dossier. The number of satellites a country owns, the active satellites it operates and the satellites it has designed and manufactured are not the same indicator.
1994–2001: The first attempt and the first success
Türksat 1A was the first launch attempt for a national communications satellite on 24 January 1994; it failed to reach its mission because of a launch-vehicle malfunction. Türksat 1B should therefore be identified as the first successful Turkish communications satellite. The 1994 launch of 1B was followed by 1C in 1996 and 2A in 2001. These early generations are now part of the historical fleet; they are not added to the active satellite total.
2008–2015: An expanding fleet
Capacity and coverage diversified with 3A in 2008, 4A in 2014 and 4B in 2015. The 4B’s service at 50° East allowed the fleet to use different orbital positions. Launch, transfer to orbit and the start of commercial service need not occur on the same day. Design-life values such as 15 years are not automatic retirement schedules; mission status must be checked against a dated operator record.
Distinguishing operator from manufacturer
An important feature of the early period is the development of satellite-operation expertise alongside international procurement and partnerships. Official technical pages record a SpaceBus platform of Alcatel/Thales Alenia Space origin for 3A, and the Japanese MELCO-manufactured DS2000 platform for 4A and 4B. Türkiye’s operation of these satellites does not mean they were entirely designed and manufactured in Türkiye. Nevertheless, experience in operations, ground control and service management also helped define the requirements of later domestic development programmes.
2021–2022: New capacity with 5A and 5B
Manufactured by Airbus, Türksat 5A launched on 8 January 2021 and entered service on 28 June 2021. It provides broadcasting and data communications from 31° East. The 5B, launched on 19 December that year, entered service on 14 June 2022. Located at 42° East, it supports broadband communications through high data capacity. Türksat’s 2024 report also states that two domestically developed ASELSAN communications devices gained spaceflight heritage through use on 5B. Externally procured satellites and domestic subsystem development thus came together within one programme.
[8] Türksat · [9] Türksat · [10] Türksat · [11] Türksat · [12] Türksat
6A: Domestic development
TÜRKSAT 6A was developed under TÜBİTAK UZAY’s project leadership with the participation of TUSAŞ, ASELSAN and CTech. The principal achievement is establishing domestic expertise in the design, manufacture, integration and testing of a geostationary communications-satellite platform. Official figures of more than 80 per cent domestic content and 84 domestically developed equipment items should not be expanded into a claim that all raw materials and every component are 100 per cent domestic. The satellite reached space through an overseas launch service; launch capability and satellite-development capability are different.
6A: From launch to service
6A launched on Falcon 9 at 02:30 Türkiye time on 9 July 2024. It reached its operational position at 42° East on 28 December; the first test broadcast took place on 17 February 2025. Official handover and commissioning occurred on 21 April 2025. These four events represent different stages of development. A ministry statement dated 9 July 2026 reports that the satellite remains in service and provides broadcasts for 69 television channels in 10 South Asian countries; this is a dated operational indicator, not a fixed capacity limit.
[14] Türksat · [15] TÜBİTAK · [16] TÜBİTAK · [17] Ministry of Transport and Infrastructure
6A: Models and test infrastructure
TÜBİTAK UZAY’s project page separately lists 6A’s thermal-structural qualification, electrical-electronic, engineering and flight models. This approach describes validation beyond completing a single satellite and launching it directly: different models test the structure, electronics and systems working together. The enduring output of such a programme is not just the vehicle operating in orbit; test infrastructure, new equipment’s flight heritage and trained teams can also be carried into later projects. Each of these gains must be assessed through its own evidence and mission results.
How should the chronology be read?
A date should be accompanied by a label such as launch, test or service. The launch vehicle places a satellite in its initial orbit; the satellite may then move to its operational location while subsystems are checked and it is prepared for service. A test broadcast trials a particular communications function; it does not alone establish that every service taken over by the operator began that day. Likewise, moving channels to a new satellite does not prove that every task of the old one ended at that moment. This library records active status with its last verification date and retirement as a separate record. This prevents previously announced targets from being confused with completed missions.
COMMUNICATIONS / OBSERVATION / SMALL SATELLITES
Get to know Turkish satellites through their missions.
Launch, deployment from a station, entry into service and mission end have different dates. Older satellites, launch failures and experimental missions are also part of the historical record; this table is not a count of an operational satellite fleet.
21 satellite records.
Communications satellite; launch failure
Türksat 1A
Launch failed; no operational missionTürkiye’s first communications-satellite launch attempt.
Geostationary communications satellite
Türksat 1B
Historic satellite whose mission has endedThe first successful national communications satellite; entered service in 1994.
Geostationary communications satellite
Türksat 1C
Historic satellite whose mission has endedExpanded the first generation’s coverage and backup capability.
[1] Türksat · [21] Türksat · [20] Turkish Space Agency · [22] Türksat
Geostationary communications satellite
Türksat 2A (Eurasiasat 1)
Historic satellite whose mission has endedCommunications satellite commissioned by the Türk Telekom–Alcatel partnership.
[1] Türksat · [3] Türksat · [21] Türksat · [20] Turkish Space Agency · [22] Türksat · [18] Türksat
Geostationary communications satellite
Türksat 3A
In service in the current official fleetBroadcasting and communications services at 42° East.
Geostationary communications satellite
Türksat 4A
In service in the current official fleetIncreased the fleet’s service capacity at 42° East.
Geostationary communications satellite
Türksat 4B
In service in the current official fleetCommunications and data services at 50° East.
Geostationary communications satellite
Türksat 5A
In service; commissioned on 28.06.2021Ku-band broadcasting/data services at 31° East.
Geostationary communications satellite
Türksat 5B
In service; commissioned on 14.06.2022Broadband capacity at 42° East and spaceflight experience for domestic equipment.
Geostationary communications satellite
Türksat 6A
In service; official handover on 21.04.2025The first geostationary communications-satellite platform developed in Türkiye.
[14] Türksat · [13] TÜBİTAK · [17] Ministry of Transport and Infrastructure
Optical Earth observation
BİLSAT
Retired: August 2006Technology transfer, ground infrastructure and spaceflight experience for domestic equipment.
1U experimental CubeSat
ITUpSAT1
Historic mission; operating status in 2026 not confirmedUniversity-scale design, testing and satellite tracking.
Optical Earth observation
RASAT
Retired: 23 August 2022A satellite developed in Türkiye and a long-running image archive.
High-resolution Earth observation
GÖKTÜRK-2
Operations confirmed in the Ministry of National Defence’s statement of 18 December 2022TÜBİTAK UZAY–TUSAŞ development and manufacturing expertise.
3U amateur communications CubeSat
TURKSAT-3USAT
Historic mission; operating status in 2026 not confirmedVHF/UHF communications and university testing experience.
Optical reconnaissance and Earth observation
GÖKTÜRK-1
Sent into orbit; health status in 2026 not verified in this dossierInternational division of work and USET infrastructure.
2U science/technology demonstration under QB50
HAVELSAT
Mission period: 2017–2019; orbital lifetime completedSmall-satellite development with universities and industry.
[33] Istanbul Technical University · [34] ITU USTTL project lead / TUYAD workshop
2U scientific CubeSat under QB50
BeEagleSat
Historic mission; current operations not confirmedInternational thermospheric research and team development.
3U experimental/amateur communications
UBAKUSAT
Ground-station contact confirmed on 11 May 2018Small-satellite development and command/communications trials.
[35] ITU USTTL · [36] ITU USTTL · [37] TAMSAT – Project Partner
PocketQube / pocket satellite
Grizu-263A
Launch and first signals verified; status in 2026 not confirmedA student team’s actual orbital mission.
Sub-metre-resolution optical Earth observation
İMECE
Mission activity and inventory entry verified in statements from 2025Domestic capability in electro-optical cameras and satellite subsystems.
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Continue your research.
The Turkish Space Industry
Türkiye’s satellite, ground segment, launch and research ecosystem; source-linked dossiers on public bodies, private companies and universities.
02 / RESEARCH DOSSIERTürkiye’s Space and Satellite History
From Türkiye’s communications and observation satellites to university missions: a growing foundation of history, technology and expertise.
03 / RESEARCH DOSSIERAviation and Space Research Library
Aviation and Turkish space industry publications, official handbooks, technical report archives and research questions, searchable by subject.
REFERENCES / OPEN RESEARCH
Follow the evidence.
- Satellite History ↗
- TÜRKSAT 6A — TÜBİTAK UZAY ↗
- Satellite Communications 101 — Türksat Satellites, pp. 78–79 ↗
- A Century of Science in the Republic — Our First Satellite, TÜRKSAT ↗
- Türksat 3A — Technical Specifications ↗
- Türksat 4A — Technical Specifications ↗
- Türksat 4B — Technical Specifications ↗
- Türksat 5A Turns Three ↗
- Türksat 5A Commissioned by the President ↗
- TÜRKSAT 5A ↗
- TÜRKSAT 5B ↗
- Türksat Annual Report 2024 — Türksat 5B ↗
- Our First Domestic and National Communications Satellite, TÜRKSAT 6A, Officially Begins Its Mission ↗
- Türksat 6A Launched into Space: First Signal Received ↗
- TÜRKSAT 6A Tests Completed and Trial Broadcasting Begins ↗
- TÜRKSAT 6A Completes Its First Year in Space ↗
- TÜRKSAT 6A Marks Two Years in Space ↗
- Channel Transfers to Türksat 4A Completed ↗
- 2015 Annual Report — Milestones ↗
- Our Space History ↗
- Satellite Catalogue — End-of-Life Satellites ↗
- Satellite Fleet — End-Of-Life Satellites (previous version) ↗
- Satellite Fleet ↗
- Türksat 4B Successfully Launched ↗
- BİLSAT ↗
- The Second Satellite Built at ITU, TURKSAT-3USAT, Is in Space ↗
- RASAT ↗
- Our Domestic Observation Satellite RASAT Completes Its Mission! ↗
- GÖKTÜRK-2 ↗
- Our Eye in Space, Göktürk-2, Has Served for 10 Years ↗
- TUSAŞ at SATELLITE 2017 with Satellite Design, Manufacturing, Integration and Test Capabilities ↗
- TUSAŞ – IDEF Space Systems ↗
- HAVELSAT: 2U CubeSat Developed with the Contribution of ITU-USTTL ↗
- CubeSats in Türkiye – Alim Rüstem Aslan ↗
- UBAKUSAT, Our Country’s Satellite Sent into Space, Comes from ITU ↗
- UBAKUSAT Is in Orbit! ↗
- UBAKUSAT in Orbit ↗
- Grizu-263A Is in Space! ↗
- İMECE ↗
- TÜBİTAK Celebrates World Space Week ↗
- Sub-Metre-Resolution Earth Observation Satellite İMECE Completes Its Second Year in Space ↗