Launch first
S.C.O.T.I. departs one year before NAVIGATER so the relay can be commissioned before the atmospheric aircraft begins its prime science campaign.
STARSHOT AEROSPACEContact 
SATURN SYSTEM / RELAY AND SCIENCE ORBITER
S.C.O.T.I.
An RTG-powered Saturn orbiter designed to establish a communications relay for NAVIGATER, then use repeated Titan flybys to reshape a long-lived science tour of the Saturn system.
Saturn Communications Orbiter and Titan Interceptor
A relay for Titan. A careful tour of Saturn.
S.C.O.T.I. launches one year before NAVIGATER and targets a five-year cruise to Saturn. Its arrival sequence uses an approximately 800 km Titan flyby and a chemical capture stage to establish a highly elliptical Saturn orbit. Titan encounters then become the principal tool for raising, lowering and rotating the orbit with limited propellant use.
Preliminary mission architectureCURRENT BASELINE
Mission at a glance.
- Destination
- Saturn system
- Cruise target
- Approximately 5 years
- Arrival encounter
- Titan flyby at approximately 800 km
- Primary power
- Radioisotope power system
- Fine propulsion
- Xenon ion thrusters
- Primary role
- Titan relay and Saturn-system science
- Launch relationship
- One year before NAVIGATER
- Status
- Preliminary mission architecture
MISSION PROFILE
From departure to science operations.
Every value remains subject to trajectory analysis, subsystem sizing and independent review.
Five-year cruise
Deep-space navigation and small correction burns refine the Saturn arrival geometry. The exact transfer depends on launch energy and planetary alignment.
Titan-assisted capture
The vehicle targets an approximately 800 km Titan encounter. A chemical kick stage provides the impulsive Saturn-capture manoeuvre during the associated arrival sequence.
Elliptical tour
The initial apoapsis reaches Titan's orbital region while periapsis passes inside the main rings, in a deliberately selected clear corridor rather than through ring material.
Gravity-assist steering
Repeated Titan flybys exchange orbital energy and reshape inclination, periapsis and encounter timing. Ion propulsion performs precise targeting and correction work.
Relay and science
A steerable relay antenna supports NAVIGATER while a high-gain dish returns S.C.O.T.I.'s own ring, moon, field and particle observations to Earth.
SPACECRAFT ARCHITECTURE
The systems that make the mission credible.
Architecture is presented as a working engineering baseline, not flight-qualified hardware.
Communications
Separate Titan-relay and Earth-pointing high-gain antennas, onboard storage and delay-tolerant scheduling.
Propulsion
A chemical kick stage for capture; ion thrusters for efficient tour trimming; small attitude-control thrusters for safe pointing.
Power
An RTG-class source supports the long mission and avoids dependence on weak sunlight at Saturn.
Navigation
Optical navigation, star trackers and autonomous fault protection support close moon encounters and ring-plane operations.
Science
Imaging, infrared spectroscopy, fields and particles, dust sensing, radio science and opportunistic moon observations.
Orbit safety
No planned passage through visible ring material. Dust risk, ring-plane geometry and Saturn periapsis altitude require detailed closure.
SCIENTIFIC PARTNERSHIP MODEL
Partners reserve capability. Starshot retains and operates the spacecraft.
Revenue is tied to real engineering work and delivered mission capacity: payload accommodation, integration, operations, communications and data. A mission proceeds only after anchor funding and booked capacity pass a defined commitment threshold.
Hosted instruments
Reserved mass, power, data and viewing geometry for competitively selected Saturn-system experiments.
Relay capacity
Contracted communications windows, storage and data return for NAVIGATER and future Titan assets.
Targeted campaigns
Pre-agreed moon flybys, occultations or ring observations when they fit the safe tour design.
Extended operations
Renewable relay and science-service agreements after the prime mission, subject to spacecraft health.
ReservationPaid capacity hold after competitive selection
IntegrationStaged fees through interface review, qualification and delivery
Flight serviceLaunch, operations, downlink and data-delivery contract
ExtensionRenewable operations or relay service after the prime mission
Profitability is not assumed from gross bookings. Each mission must recover allocated development, launch, integration, operations, insurance, contingency and capital costs before an operating margin is claimed.
ENGINEERING PRECEDENT
Built from demonstrated ideas, extended carefully.
THE STANDARD
Cassini proved the power of Titan flybys. S.C.O.T.I. adds a commercial relay role and a mission architecture designed for repeatable access.
All performance figures on this page are preliminary design targets. They will change as trajectory, mass, power, thermal, communications and reliability models mature.
Return to Space Systems