Both are communications satellites. Equipped with C-, Ku-, and Ka-band payloads, Star One D1 will be used for telecommunications, television broadcast, broadband, Internet access, and other services in Brazil and in the Latin American region. JCSAT-15 will operate in Ku-band and is designed with the flexibility to be used for services such as video distribution in Japan, and data transfer communications, maritime and aviation applications in the Indian Ocean Region.
Ariane 5 is a heavy-lift launch vehicle, part of the Ariane rocket family.
ArianeGroup (formerly Airbus Safran Launchers) is an aerospace company based in France. A joint venture between Airbus and Safran, the company was founded in 2015 and is headquartered in Issy-les-Moulineaux. It consists of three core arms: aerospace, defence and security.INFO WIKI