The ODIN satellite is composed of:
- a telescope module, consisting of the telescope reflectors (1.1-m diameter) and two star trackers used for attitude sensing, with a support structure. This module makes big demands on thermal stability and alignment accuracy.
- a spacecraft bus, housing the spacecraft data handling and sensor electronics. The outside houses the launcher interface ring, sun sensors and solar panel mechanisms.
- a payload, consisting of a Sub-Millimeter wave Radiometer (SMR) and an optical spectrometer with an ultraviolet near infrared spectroscopy capability (OSIRIS).
Satellite main characteristics:
|Width||1.1 m stowed and 3.8 m opened|
|Power||340 W from deployable fixed arrays|
|Pointing accuracy||±15 arcsec in observation mode, ±1.2 arcmin scanning|
|Datalink||> 720 kbits/s to Esrange tracking station (Kiruna)|
|Mass memory||> 100 Mb in solid state memory|