Launch Success

Liftoff Time (GMT)

16:24:26

Thursday March 6, 2025

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Mission Details

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Launch Notes

Originally intended to launch on the Russian Soyuz launch vehicle, due to geopolitical factors this is no longer an option. CNES & DGA instead opted to launch aboard Ariane 62.

CSO-3

Wiki

The French CSO (Composante Spatiale Optique) high-resolution reconnaissance satellites are the optical space component of the MUSIS program that will replace the current Hélios 2 military observation satellites. CNES, the French space agency, has notified Astrium that the DGA (Direction Générale de l'Armement), the French arms procurement agency, has awarded the company a 795€ million contract for two satellites for the CSO program. The contract also includes an option for a third satellite. As the prime contractor for the CSO satellites programme, Astrium will provide the agile platform and avionics, and will also be responsible for the integration work, testing, and delivery of the satellites to CNES. Thales Alenia Space will provide Astrium with very high-resolution optical instruments.

Sun-Synchronous Orbit

1 Payload

3,655 kilograms

Rocket

Active
Ariane 62

Active Since 2024

European Space Agency logo

Manufacturer

ESA

Price

$88.00 million

Rocket

Diameter: 5.4m

Height: 62m

Payload to Orbit

LEO: 10,350 kg

GTO: 4,500 kg

Liftoff Thrust

8,370 Kilonewtons

Fairing

Diameter: 5.4m

Height: 20m

Stages

2

Strap-ons

2

Launch Site

General Trajectory

Launching

North

ELA-4

Guiana Space Centre, French Guiana, France

Fastest Turnaround

239 days 21 hours

Stats

Ariane 6


2nd

Mission

1st

Mission of 2025

European Space Agency


300th

Mission

1st

Mission of 2025

2025


44th

Orbital launch attempt