JCSAT-5 & Equator S

Launch Time
Tue Dec 02, 1997 22:52 UTC

Flight V103.


Ariane 44P
Image Credit: Arianespace
Status: Retired
Liftoff Thrust: 4,334 kN
Payload to GTO: 3,460 kg
Stages: 3
Strap-ons: 4
Rocket Height: 58.72 m

Mission Details


JCSAT-1B, known as JCSAT-5 before launch, is a geostationary communications satellite operated by SKY Perfect JSAT Group (JSAT) which was designed and manufactured by Hughes (now Boeing) on the HS-601 platform. It has a pure Ku band payload and was used to replace JCSAT-1 at the 150°East longitude. It covers Japan, Korea, most of China, Thailand, Vietnam, Laos, part of Indonesia, part of Malaysia, and Hawaii.

Payloads: 1
Total Mass: 2,982.0 kg
Geostationary Transfer Orbit

Equator S

Equator-S is an element of the International Solar-Terrestrial Physics (ISTP) program. Spacecraft design, manufacturing, and testing were provided by the Max-Planck-Institut für Extraterrestrische Physik (MPE). The project was financially supported by DARA (Deutsche Agentur fur Raumfahrt Angelegenheiten).

The Equator-S objectives are to provide high-resolution plasma, magnetic, and electric field measurements in several regions not adequately covered by the existing ISTP missions, namely the low-latitude dayside magnetopause and its boundary layer, the equatorial ring current region, and the near-earth equatorial plasma sheet. These regions play key roles in our understanding of the global perspective of solar-terrestrial relations as well as the detailed plasmaphysical processes.

Payloads: 1
Total Mass: 250.0 kg
Geostationary Transfer Orbit


ELA-2, Guiana Space Centre, French Guiana, France



78th orbital launch attempt


92nd mission
10th mission of 1997
87th successful mission
31st consecutive successful mission

Ariane 4

73rd mission
10th mission of 1997
70th successful mission
31st consecutive successful mission