NATIONAL CENTER OF SPACE RESEARCH
Diamant B | Tournesol
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Apr 15, 1971 at 09:19 UTC
▸ Flight profile›
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MISSION OVERVIEW
French satellite designed to detect the presence of hydrogen in several directions of the celestial sphere.
LAUNCH DETAILS
VEHICLE
Diamant BMISSION
Tournesol
MISSION TYPE
Astrophysics
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Diamant Launch AreaLAUNCH SITE
Guiana Space Centre, French GuianaCOUNTRY
FRA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: d6cc6817-411a-4802-9a29-1f43e7011ba8
Reported date: Apr 15, 1971 at 09:19 UTC
Last synced: 14 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Diamant B →
MANUFACTURER
Société d'étude et de réalisation d'engins balistiques
VARIANT
B
FLIGHTS
5
SUCCESSES
3
SUCCESS RATE
60%
The Diamant rocket (Diamant is French for "diamond") was the first exclusively French expendable launch system and at the same time the first satellite launcher not built by either the United States or USSR. As such, it has been referred to as being a key predecessor for all subsequent European launcher projects.
FREQUENTLY ASKED QUESTIONS
When is the Diamant B | Tournesol launch?
The Diamant B | Tournesol is scheduled for Thursday, April 15, 1971 at 9:19 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Tournesol?
The Diamant B | Tournesol mission uses the Diamant B rocket, manufactured by Société d'étude et de réalisation d'engins balistiques. The Diamant B has flown 5 times with a 60% success rate.
Where is the Diamant B | Tournesol launching from?
The launch takes place from Diamant Launch Area at Guiana Space Centre, French Guiana.
What orbit is Tournesol going to?
The Tournesol mission is targeting Low Earth Orbit.
Who is launching Tournesol?
The Diamant B | Tournesol is operated by National Center of Space Research.
Can I watch the Diamant B | Tournesol launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 28, 2026 21:44 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 21:44 UTC
Launch date set: Apr 15, 1971 at 09:19 UTC
NET (No Earlier Than) confirmed by National Center of Space Research
Mar 28, 2026 21:44 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 14 minutes ago
●Launch Library 214 minutes ago
Launch ID: d6cc6817-411a-4802-9a29-1f43e7011ba8
●Open-Meteo Weather1 week ago
Pad weather at 5.22, -52.78
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Mission Profile
Tournesol was a Diamant B mission operated by National Center of Space Research that lifted off from Diamant Launch Area, Guiana Space Centre, French Guiana on April 15, 1971. The flight carried its payload on a astrophysics mission to Low Earth Orbit. The launch was a success.