IPStar 1 / Thaicom 4


Int. spacecraft nº:

Thailand spacecraft nº: 5

Launch data:

Designation 28786 / 05028A
Launch date 11 Aug 2005 - 08:20 UT
Launch site Ko, ELA-3
Launch vehicle  Ariane-5GS
Mission Communication
Geostationary orbit on:
Perigee / Apogee 35777 x 35797 km
Inclination 0.01°
Period 1436.12 min

Spacecraft data:

Prime contractor  Space Systems Loral (SSL)
Operator Shin Satellite
Platform  Loral SSL-1300S
Mass at launch  6505 kg
Dry Mass 3400 kg
Basic shape  
Solar array  
Equipment 87 Ku-band & 10 Ka-band transponders
Propulsion 4 SPT-100 plasma thrusters
Design lifetime  12 years


 Aug 2005 -  119.5° E 

Mission details:

iPStar-1 (Thaicom 4) is a high-powered geostationary satellite to be used for broadband communications applications by Shin Satellite Plc. of Thailand. iPSTAR-1 will provide direct-to-desktop, last-mile services, including new multimedia and data services to customers in Asia, India, and Australia. 

Featuring 87 Ku-band transponders and 10 Ka-band transponders and weighting 6505 kg, iPStar 1 will be the heaviest commercial geostationary communication satellite. It is based on Space Sevice Loral′s LS-1300S bus.

Astrophilately covers:


Launch cancel Kourou.


Headquarter cancel Paris.

Credit covers: J.VdDr.

Ref.: #7(JR726), #14, #207, #415 - update: 13.01.20 Home