Star One B4
It was constructed by the Hughes Space and Communications Company, and is based on the HS-376W satellite bus.Following its launch it raised itself into geostationary orbit by means of its onboard R-4D apogee motor, and was positioned at 75° West for on-orbit testing.It carries twenty eight transponders, and has an expected on-orbit lifespan of 12 years.and the end of satellite Brasilsat B4 was moved to junk orbit in June 2021.You can help Wikipedia by expanding it.This article about one or more spacecraft of Brazil is a stub.