picture of the encyclopedia
previous next
Version 0.81 comes with a new web design! Please allow popups for navigation.

Theos 1

THai Earth Observation System
Also called Thaichote


Designation 33396 / 08049A
Launch date 1 Oct 2008
Country of origin Thailand
Mission Remote sensing
Perigee/Apogee 820 km, sun-synchronous
Inclination 98.8°
Period 101 min
Launch vehicle Dnepr #12

Remote sensing satellite program operated by Thai Ministry of Science and Technology's Space Agency GISTDA (Geo-Informatics and Space Technology Development Agency). To be used for both civilian and military purposes. Will provide imaging of any part of Thailand within 2 days.

A contract was signed in Jul 2004 with EADS for one satellite and launch + the ground segment + inclusion of Thai enginners in the development team. Worth EUR 130 million ($161.7 million). EADS's AstroSat product line will be used.

sat-index articles

Technical data


Prime contractor Astrium
Platform AstroSat
Mass at launch 744 kg
Mass in orbit  
Solar array  
Stabilization 3-axis
DC power 800 W
Design lifetime 5 years

Has 2 cameras. Will provide 2 m resolution in panchromatic mode. In multispectral mode, the resolution will be 15 m with a 90 km swath width (4 bands in 450-900 nm range).

Downlink at 2209.4 & 2212.6 MHz

© TBS Internet, all rights reserved. All reproduction, copy or mirroring prohibited. Legal notice
francais anglais contact