JCSat 17

Launched together with: GEO-KOMPSAT 2B

Prime manufacturer
Platform	Lockheed Martin A2100 buss
Operator	Sky Perfect JSAT
Mass at launch	5857 kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment	S-band, C-band and Ku-band transponders 18-metre-dia Harris S-band antenna
Solar array
Stabilization
Propulsion
DC power
Design lifetime

JCSAT 17 is a geostationary satellite owned by Sky Perfect JSAT, a Tokyo-based company. The satellite 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.

On Feb 18, 2020 at 2218 UTC Ariane vehicle L5111, flight VA252, took off from Kourou and headed to a 6 degree inclination geotransfer orbit. This was the third launch of the new Ariane 5ECA+ variant with an ESC-D upper stage, stretched by 4 cm relative to the older ESC-A allowing it to carry 360 kg of additional propellant. The earlier 5ECA+ flights were VA249 and VA251.
The upper payload was JCSAT-17 for Sky Perfect JSAT. with a launch mass of 5857 kg. Unlike previous JCSAT satellites, this one carries a large 18-metre-dia Harris S-band antenna on a long boom. The S-band system supports communications for disasters and other high traffic events. The satellite, using a Lockheed Martin A2100 buss, also carries the usual Ku-band and C-band communications payloads.

Ref.: #7(JR777), #228 - update: 02.05.20