TheMeteosat series ofsatellites aregeostationarymeteorological satellites operated byEUMETSAT under the Meteosat Transition Programme (MTP) and the Meteosat Second Generation (MSG) program.

The MTP program was established to ensure the operational continuity between the end of the successful Meteosat Operational Programme in 1995 and Meteosat Second Generation (MSG), which came into operation at the start of 2004 using improved satellites. The MSG program will provide service until the MTG (Meteosat Third Generation) program takes over.

The first generation of Meteosat satellites, Meteosat-1 to Meteosat-7, provided continuous and reliable meteorological observations from space to a large user community. Meteosat-1 to -7 have all now retired.

When operational, the Meteosat First Generation provided images every half-hour in three spectral channels (Visible, Infrared) andWater Vapour, via theMeteosat Visible and Infrared Imager (MVIRI)instrument. Until 1 February 2017, Meteosat-7 provided the primary imagery coverage over the Indian Ocean and provided a service relaying data fromArgos Data Collection Platforms (DCP), such as buoys, in support of the Tsunami Warning System for the Indian Ocean. A range of processed meteorological products were also produced.^[4] The last disseminated Meteosat-7 image was on 31 March 2017. Moving Meteosat-7 to its ultimate resting place in a graveyard orbit commenced on 3 April 2017 and the spacecraft final command sent on 11 April 2017.

The satellites were manufactured by a consortium COSMOS, withAérospatiale in itsCannes Mandelieu Space Centre, as Prime, and includedMatra,MBB,Selenia Spazio,Marconi Company. They are 2.1 metres in diameter and 3.195 metres long. Its initial mass in orbit is 282 kg, and in orbit, the satellite spins at 100rpm around its main axis.^[5]

Meteosat Second Generation was designed in response to user requirements to serve the needs ofnowcasting applications andnumerical weather prediction. In addition, theGERB instrument provides important data for climate monitoring and research. The MSG satellites are 3.2 m in diameter and 2.4 m high and spin anti-clockwise at 100 rpm^[7] at an altitude of 36,000 km.^[8]

The contract for the second generation was awarded toAérospatiale in itsCannes Mandelieu Space Centre (nowThales Alenia Space), with main subcontractors asMatra,Messerschmitt,Alenia.

The satellites are spin-stabilised like the previous generation, but with many design improvements. The more frequent and comprehensive data collected by MSG also aids the weather forecaster in the swift recognition and prediction of dangerous weather phenomena such as thunderstorms, fog, and explosive development of small, but intense, depressions, which can lead to devastating wind storms.

On 29 January 2004 the first Meteosat Second Generation satellite MSG-1, renamed toMeteosat-8 once operational, commenced routine operations. In addition to the mainoptical payload SEVIRI (Spinning Enhanced Visible and Infrared Imager), Meteosat-8 also carries the secondary payload GERB (Geostationary Earth Radiation Budget) instrument. The launch of MSG-2 (renamed to Meteosat-9) took place on 21 December 2005. The launch of MSG-3 (renamed to Meteosat-10) took place on 5 July 2012.

Meteosat-8 is stationed over the Indian Ocean, arriving at 41.5°E on 21 September 2016 and it took over as prime Indian Ocean Data Coverage (IODC) spacecraft on 1 February 2017 (replacing Meteosat-7). Meteosat-8 was retired from operational service on 1 July 2022 and finally decommissioned on 13 October 2022 after twenty years in orbit. The spacecraft was disposed of in compliance with ISO-24113 guidelines (although not designed with this in mind) having been raised 740km above the geostationary ring and spun down to 20rpm. The propulsion system was then passivated and the satellite deactivated.

Meteosat-9 is also stationed over the Indian Ocean, arriving at 45.5°E on 20 April 2022 and it took over as prime IODC spacecraft on 1 June 2022 (replacing Meteosat-8).

Meteosat-10 and -11 are located over Africa with various differences in operational configuration. Since 20 March 2018, Meteosat-10 provides an operational European 'rapid scan' mode service (the MSG RSS service first commenced in May 2008), with images of Europe every 5 minutes. Since 20 February 2018, Meteosat-11 provides the main full Earth imagery service over Europe and Africa (with images every 15-minutes).^[9]

MSG-4 was successfully launched into space on 15 July 2015 at 18:42 local time on top anAriane 5 Rocket from theGuiana Space Centre in Kourou, French Guiana. Like MSG-1, MSG-2 and MSG-3, MSG-4 was launched byArianespace. The MSG-4 commissioning was successfully completed in December 2015 at which time the spacecraft was placed into in-orbit storage as planned, and renamed to Meteosat-11.

Meteosat-8, -9, -10, and -11 each carry a GERB Instrument, DCP capable service equipment and a Search and Rescue signal Processor (SARP) that is capable of detecting 406 MHzdistress signals fromemergency position-indicating radiobeacon stations.^[10] For SARP, see more underCospas-Sarsat.

Considering the long development cycle for a new observational space system,EUMETSAT has been working on the definition and the planning for a Meteosat Third Generation (MTG) system since the year 2000. MTG components providing continuity of MSG services need to be available before the end of the nominal lifetime of MSG. MTG preparatory activities started end of 2000 in cooperation with the European Space Agency (ESA), following the decision of the EUMETSAT Council to proceed with a Post-MSG User Consultation Process. The process is aimed at capturing the foreseeable needs of users of EUMETSAT's satellite data in the 2015-2025 timeframe.^[13]

On 19 March 2010, ESA choseThales Alenia Space for a final negotiation leading to a contract to be signed during June.^[14] On 22 June 2010, EUMETSAT confirmed the choice of Thales Alenia Space.^[15] On 24 February 2012, the development contract betweenESA andThales Alenia Space was signed by Mr. Liebig and Mr. Seznec. Thales Alenia Space leads the industrial consortium that is now building the MTG family. Along with being the prime contractor, Thales Alenia Space is responsible for the MTG-I imaging satellite, including the primary payload, the Flexible Combined Imager. Bremen-basedOHB is responsible for the MTG-S satellites and provision of the common satellite platforms, supported byAstrium GmbH as theSystem Architect.

A total of 6 satellites are being developed under the MTG contract. Four MTG-I imaging satellites, as well as two MTG-Ssounder satellites. The launch of the first MTG satellite, Meteosat-12 (MTG-I1), occurred on 13 December 2022, at 20:30 UTC^[16][17] and the satellite has been operational since December 2024.^[18] This was followed by the first MTG-S (MTG-S1/Sentinel-4A with the firstSentinel-4 instrument aboard) launching on 1 July 2025 at 21:04 UTC.^[19] The next MTG-I is expected to launch in 2026.^[12] The following three satellites will be launched around 10 years later to replace the first set, which have a nominal life of 8.5 years and sufficient fuel for more than 10.7 years.^[19]

• EUMETSAT
• "Perfect day for weather satellite".BBC News. December 21, 2005. RetrievedFebruary 6, 2006.
• Krige, John. "Crossing the Interface from R&D to Operational Use: The Case of the European Meteorological Satellite," Technology and Culture, Volume 41, Number 1, January 2000, pp. 27–50.

Wikimedia Commons has media related toEUMETSAT.

• Meteosat Series of Satellites
• WMO OSCAR | Space Agency: EUMETSAT
• EUMETSAT Image Gallery (latest images)
• Compare Meteosat images with other meteorological satellites

• Earth observation satellites of the European Space Agency
• Weather satellites
• Ariane commercial payloads
• European Organisation for the Exploitation of Meteorological Satellites
• Satellites in geosynchronous orbit
• Data collection satellites

• All articles with dead external links
• Articles with dead external links from November 2017
• Articles with permanently dead external links
• CS1 German-language sources (de)
• Articles with short description
• Short description is different from Wikidata
• Commons link is locally defined