Sirius 1
Small methane rocket for launching one small satellite
Sirius Space Services
French startup near Paris building a family of methane-fueled small rockets, from a 180 kg launcher up to versions with side boosters. CNES picked it to fly from a new pad in French Guiana, and a suborbital demo is planned for 2027.
Products, by altitude
Launch · From the pad to orbit
In development Announced Sirius 13 and Sirius 15
Bigger Sirius rockets with extra boosters for heavier loads
Milestones
- Sep 2026 Announced the first hot-fire tests of the complete STAR-1 engine, with turbopumps, injector, avionics and software running together. Company statement1
- Jun 2026 CNES announced Sirius as the selected user of the new multi-user launch facility on the old Diamant site at the Guiana Space Centre. Company statement2
- Mar 2026 Acquired precision metal parts maker AMM-42, its second acquisition in under a year after SERM in June 2025. Company statement3
- Sep 2024 Announced an agreement with Equatorial Launch Australia for Launch Complex 3 at the Arnhem Space Centre, renamed Le Mans. Company statement4
- Dec 2023 Reported a 60-second hot fire of the STAR-1 V2 engine at DLR Lampoldshausen. Company statement5