The French satellites Diadème 1 and Diadème 2 were geodetic missions.
These satellites are magnetically stabilized which limit their trackability in the southern hemisphere. Diademe has the following instrumentation onboard:
Both satellites were launched only one week apart by Diamant-A boosters in February 1967 into elliptical orbits. The orbit of Diadème 1 was lower than planned.
|Type / Application:||Geodesy|
|Equipment:||144 retro reflectors|
|Power:||4 deployable fixed solar arrays, batteries|
|Orbit:||569 km × 1350 km, 39.98° (#1); 591 km × 1881 km, 39.45° (#2)|
|Diadème 1 (D 1C)||1967-011A||08.02.1967||Ha Brigitte||P||Diamant-A|
|Diadème 2 (D 1D)||1967-014A||15.02.1967||Ha Brigitte||Diamant-A|