Diapason was a small cylindrical satellite, 20 cm long and 50 cm in diameter which was used for making geodetic measurements. Observations consisted of doppler delay of radio signals, plus photography of the satellite against the star field. Satellite performance was satisfactory with useful observations occuring for over 5 years.
|Type / Application:||Science|
|Power:||4 deployable fixed solar arrays, batteries|
|Orbit:||502 km × 2735 km, 34.06°|
|Diapason (D 1A)||1966-013A||17.02.1966||Ha Brigitte||Diamant-A|