Transfer vehicle

Monarch orbital spacecraft

Stellar Alpina · in development

Stellar Alpina is developing Monarch for orbital transport, hosting and proximity operations, including cislunar destinations. The company advertises up to 200 kg payload capacity, 1,000 kg wet mass and 6,000 m/s delta-v with rotating detonation propulsion. Monarch provides the architectural foundation for Morpho. Payload reports a targeted in-orbit demonstration by 2029, dependent on launch availability; this is not a scheduled lunar flight.