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JCSAT 17 is owned by Sky Perfect JSAT, a Tokyo-based company. Once in orbit, the new satellite will unfurl a 59-foot-diameter (18-meter) S-band mesh communications antenna made by L3Harris Technologies, formerly known as Harris Corp., of Melbourne, Florida.

CSAT 17 carries S-band, C-band and Ku-band transponders to provide data connectivity and broadcast services over Japan and other parts of the Asia-Pacific region.

The S-band and C-band payloads on JCSAT 17 will be used by NTT Docomo, a Japanese mobile phone company, to provide mobile connectivity across Japan and surrounding regions, according to Sky Perfect JSAT.

Alternate Names

  • JCSAT17
  • 45245

Facts in Brief

Launch Date: 2020-02-18
Launch Vehicle: Ariane 5 ECA
Launch Site: Kourou, French Guiana
Mass: 5857 kg

Funding Agency

  • Unknown (Japan)


  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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