News Releases

Horizons-4 Launch Update

Aug 2, 2023

  SKY Perfect JSAT Corporation (Head Office: Minato-ku, Tokyo; Representative Director, President & Chief Executive Officer: Eiichi Yonekura; “SKY Perfect JSAT”) announced today the launch schedule for the Horizons-4 communications satellite.

  The Horizons-4 satellite marks the fifth satellite by SKY Perfect JSAT and Intelsat (Head Office: Luxemburg, Chief Executive Officer: David Wajsgras) in 20 years, following Horizons-1 (launched in 2003); Horizons-2 (launched in 2007); JCSAT-85/Intelsat 15 (launched in 2009) and Horizons 3e (launched in 2018). Horizons-4 will eventually succeed and replace Horizons-1 in geostationary orbit at the 127 degrees West location.

 The Horizons-4 Ku-band payload, which will be jointly owned by both companies*1, will provide capacity for mobility connectivity with expanded coverage over the Pacific Ocean, in addition to the United States, Mexico and the Caribbean.

  1. Planned launch date : August 3, 2023 (Japan Standard Time)
  2. Launch site : Cape Canaveral Space Force Station, Florida, U.S.A
  3. Launcher : SpaceX (Falcon 9)
  4. Manufacturer : Maxar (Maxar 1300 series bus)
  5. Satellite specifications : (1) Frequency band: Ku-band
                                       (2) Primary Coverage: North America and Pacific Ocean region
  6. Planned orbital slot : 127 degrees West longitude

 For the latest launch information and webcast, please check SpaceX website at: (See “INTELSAT G-37 MISSION”)

*1 About Horizons-4

 The Horizons-4 satellite will be owned by the new joint venture company Horizons-4 Satellite LLC, the membership of which will be held by JSAT International Inc., a subsidiary of SKY Perfect JSAT and Intelsat US LLC, a subsidiary of Intelsat, both of which are based in the United States.


Artist’s depiction of Horizons-4 in space