MSG 4 is a geostationary weather satellite, the fourth and last of Eumetsat′s Meteosat Second Generation spacecraft made by Thales Alenia Space. The
meteorological sentinel is the last in a breed of spin-stabilized satellites made in Europe, a popular design long used for many communications spacecraft until their
replacement with more complicated, heavier three-axis stabilized platforms. MSG 4 will go into storage for two-and-a-half years before entering service when aging
Meteosat birds are retired. Eumetsat expects MSG 4, which will be renamed Meteosat 11 in the coming months, to operate until at least two third-generation Meteosat
platforms are in orbit in the early 2020s.
Arianespace launched two satellites into geotransfer on Jul 15, 2015. Meteosat Second Generation (MSG) 4 will become Meteosat 11
once in operation with EUMETSAT, the European Meteorological Satellite Organization.
Star One C4 is a television satellite for the Brazilian operator Embratel Star One.