This page contains reference images for the French D-series satellites. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.
SIGNE-3, the Solar Interplanetary Gamma-Neutron Experiment 3, a D-2B type spacecraft, is also included here.
(including anniversary-of-launch covers, and launch-related event covers)
|Other postal items
(stamps, souvenir sheets, aerogrammes, postal cards, etc.)
|D-series (on other than D-series launch covers)|
|Satellite(s)||Launch Date(s)||Reference Image(s)|
|D-1A / Diapason||1966-02-18|
|D-1C / Diademe-1||1967-02-08|
|D-1D / Diademe-2||1967-02-15|
|D-2A / Tournesol||1971-04-15|
|D-2A / Polaire [failed]||1971-12-06|
|D-2B / Aura||1975-09-27|
|D-3||Changed to FR-2 or CAS-B and canceled|
|D-5A / Pollux, D-5B / Castor [failed]||1973-05-21|
|D-5A / Pollux, D-5B / Castor||1975-05-17|
|SIGNE-31 (D-2B type)||1977-06-17|
1SIGNE-1 and SIGNE-2 were payloads on Prognoz-2 and (possibly) Prognoz-6 spacecraft, respectively.
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