Orbital Transfer Vehicles — Space Hardware Marketplace

RPS Orbital Transfer Vehicle (Lunar Transfer)

• Propellantscryogenic LOX/methane
• Starting orbit185 km LEO parking orbit
• Target orbitNear-Rectilinear Halo Orbit (NRHO)

Centurion-powered OTV performing ballistic lunar transfers from LEO parking orbit to NRHO.

RPS Orbital Transfer Vehicle (LEO-to-MEO/GEO)

• Propellantscryogenic LOX/methane
• Thrust3307 lbf
• Specific impulse (vacuum)374 s

Centurion-powered OTV that rideshares to LEO and self-maneuvers to MEO or GEO.

Supernova (Solar Thermal Spacecraft)

• Propulsion typeSolar Thermal Propulsion (STP)
• PropellantSafe, storable monopropellant
• Delta-v6 km/s total

Maneuverable solar-thermal spacecraft delivering 6 km/s delta-v across LEO to cislunar space, taskable in minutes, with <24h payload…

Orbot-3 / Waypoint-1

• PlatformFull Orbot
• OrbitSun-synchronous orbit
• Launch dateMid 2029

First full-scale, commercially operational Orbot combining all proven technologies, planned for mid 2029.

Orbot-1 and Orbot-2 (Twin RPO/D Demonstrators)

• Form factor200 kg bus, up to 100 kg payload
• Spacecraft count2 (twin pair)
• OrbitSun-synchronous orbit

Twin 200 kg ESPA-class spacecraft for rendezvous, proximity operations, and docking demonstrations, planned for early 2028.

Chimera LEO 1 (Flight Demonstrator)

• Vehicle typeOrbital transfer vehicle (OTV) demonstrator
• LaunchSpaceX Transporter-6 rideshare mission
• PropulsionNon-toxic hypergolic engine, 900N thrust

Epic Aerospace's first flown orbital transfer vehicle, launched on SpaceX Transporter-6 to validate its in-house propulsion, structure, and…

Chimera GEO

• Vehicle typeOrbital transfer vehicle (OTV) / space tug
• GTO-to-GEO payload capacityUp to 2,000 kg
• GTO-to-GEO transfer timeUnder 1 month

Orbital transfer vehicle for GTO-to-GEO insertion, hosted-payload station-keeping, end-of-life services, and cislunar trans-lunar injection.

Chimera LEO

• Vehicle typeOrbital transfer vehicle (OTV) / space tug
• Apogee kick capabilityApproximately ±450 km
• LTAN change capabilityApproximately 3 hours change in under 90 days

Orbital transfer vehicle (space tug) for low Earth orbit maneuvers such as apogee kicks and orbital plane changes.

Varda W-Series Reentry Capsule

• Capsule diameter~1 meter
• Spacecraft mass (W-1)~300 kg
• Reentry speed>18,000 mph, greater than Mach 25

Varda's W-Series is a free-flying orbital capsule that manufactures pharmaceuticals and materials in microgravity and returns them to…

Otter

Otter is Starfish Space's small, low-cost satellite servicing spacecraft designed to autonomously rendezvous, dock with, and maneuver client…

Vigoride

Vigoride is Momentus' small orbital transfer and service vehicle that uses a water-fed microwave electrothermal plasma thruster to…

Nyx

• ConfigurationConical reentry capsule + cylindrical service module
• Diameter (Nyx Earth)4 m
• Height (Nyx Earth)7 m

Nyx is a reusable European reentry capsule developed by The Exploration Company to deliver cargo to and from…

Mira

• Propulsion typeNon-toxic bipropellant (nitrous oxide/ethane), 8x Saiph thrusters in 4 pairs
• Thrust27 N per thruster, ~216 N total (upgraded 2025 design)
• Specific impulse290 s

Mira is Impulse Space's flight-proven orbital transfer vehicle that provides precise, on-demand payload hosting and last-mile delivery across…

Sherpa-ES

• Vehicle typeHigh-energy bi-propellant orbital transfer vehicle
• Port interface24" ESPA standard
• Propulsion systemBenchmark Space Systems Polaris (bipropellant)

High-energy chemical OTV with 6× more propellant than Sherpa-LTC, targeting GTO, GEO, MEO, trans-Lunar and cislunar orbits.

Sherpa-LTE

• Vehicle typeElectric propulsion orbital transfer vehicle
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Electric propulsion OTV with Apollo Fusion Hall effect thruster, >6 km/s delta-V enabling GEO, cislunar, and Earth-escape delivery.

Sherpa-LTC

Chemical propulsion OTV with green bipropellant (HTP+IPA), 4×22 N thrusters, and dual-mode operation for rapid orbital transfer.

Sherpa-AC

• Vehicle typeFree-flyer with attitude determination and control
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Attitude-control variant of Sherpa-FX with 2-way RF comms, reaction wheels, and hosted payload support up to 1 year…

Sherpa-FX

• Vehicle typePassive free-flyer (no propulsion, no attitude control)
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Passive free-flying CubeSat deployer for up to 16 spacecraft from a single ESPA port; no propulsion. First flight…