3. December 2021
Launching from Europe's spaceport in French Guiana

Two new ad­di­tions to the Galileo satel­lite sys­tem

Galileo 27 and 28 installed on board their launch vehicle
Galileo 27 and 28 in­stalled on board their launch ve­hi­cle
Image 1/2, Credit: ESA/P. Carril

Galileo 27 and 28 installed on board their launch vehicle

The two satel­lites will be launched on a Rus­sian Soyuz rock­et from the Eu­rope’s space­port in Kourou.
Galileo constellation
Galileo con­stel­la­tion
Image 2/2, Credit: ESA/P. Carril

Galileo constellation

The satel­lites fly in three dif­fer­ent or­bital planes, at an al­ti­tude of ap­prox­i­mate­ly 23,000 kilo­me­tres.
  • The two satellites will join the European satellite navigation system at an altitude of 23,222 kilometres.
  • For the first time, the Launch and Early Orbit Phase will be the responsibility of the Galileo Control Center at the DLR site in Oberpfaffenhofen.
  • Focus: Spaceflight, navigation, Earth observation, security

+++ Update – The two satellites were successfully launched from Europe's spaceport in Kourou on 5 December 2021. +++

Galileo satellites 27 and 28 are on their way. After a further postponement, the launch is now planned for Sunday 5 December 2021, at 01:19 CET. Having reached their orbit at an altitude of 23,222 kilometres, the satellites will operate together with the other satellites in the European satellite navigation system, Galileo, which makes highly accurate navigation signals available worldwide. For the first time, the Galileo Control Center (GCC) at the German Aerospace Center (Deutschen Zentrums für Luft- und Raumfahrt; DLR) site in Oberpfaffenhofen will be responsible for the 'Launch and Early Orbit Phase' (LEOP). LEOP covers the first seven to 10 days following separation from the launch vehicle, during which the solar arrays are deployed, the satellites are brought into a stable operating condition, and the drift phase for the intended orbital position is initiated.

The GCC is operated by the DLR Space Applications Institute (Gesellschaft für Raumfahrtanwendungen mbH; GfR) on behalf of Spaceopal GmbH, the Galileo Service Operator, and the European Union Agency for the Space Programme (EUSPA). LEOP tasks in earlier launches were carried out by the European Space Agency (ESA) or the French space agency (Centre national d'études spatiales; CNES) under the direction of Spaceopal.

Like their predecessors, the Galileo satellites will be launched from Europe's spaceport in Kourou (French Guiana, South America). Due to unfavourable weather conditions, the launch was postponed at short notice to early on Sunday morning. In the last few days, the two new satellites for the Galileo fleet have been mounted on the upper stage of a Russian Soyuz rocket and are now 'ready for launch'.

Walther Pelz­er
Walther Pelz­er, DLR Ex­ec­u­tive Board Mem­ber and Head of the Ger­man Space Agen­cy at DLR, ex­plains the im­por­tance of the Galileo satel­lite nav­i­ga­tion sys­tem.

Interaction between more than 30 satellites

A Soyuz launcher was also used to take the first two Galileo satellites into orbit 10 years ago. Between 2016 and 2018, European Ariane 5 launchers carried 12 Galileo satellites into space. With the eleventh launch, the commissioning of another two satellites was initiated, bringing the constellation up to 28 operational and spare satellites. The Galileo system is already considered the most accurate satellite navigation system in operation. This accuracy is not only important for transport geolocation, but also for financial transactions, energy supplies and agriculture.

Galileo also makes Europe independent of the satellite systems of other nations, and the civilian system has been providing its services since December 2016. It consists of a global network of satellites in three different orbital planes, controlled from two centres – one in Fucino, Italy, and the other at the DLR site in Oberpfaffenhofen.

The Galileo programme

With a stake of 25 percent, Germany is the main contributor to the European Union's Galileo programme. The satellites were built by the Franco-German space corporation Airbus and the German space enterprise OHB. The EUSPA is responsible for the operation of the system and for the marketing of Galileo services. The European Space Agency (ESA) is responsible for the overall technical development and construction of the Galileo system. In Germany, the Federal Ministry of Transport and Digital Infrastructure has responsibility for the Galileo project, while the Federal Ministry for Economic Affairs and Energy funds technological developments for Galileo, within the framework of a national programme. Both ministries receive technical support from the German Space Agency at DLR.

  • Katja Lenz
    Ger­man Aerospace Cen­ter (DLR)

    Com­mu­ni­ca­tions and Me­dia Re­la­tions
    Telephone: +49 2203 601-5401
    Linder Höhe
    51147 Cologne
  • Elisabeth Mittelbach
    Ger­man Aerospace Cen­ter (DLR)
    Ger­man Space Agen­cy at DLR
    Telephone: +49 228 447-385
    Königswinterer Straße 522-524
    53227 Bonn


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