API Reference

Systematic documentation of all types organized by domain.

Core

Foundation services for kernel loading, time, frames, celestial bodies, and spacecraft.

• SpiceAPI & Data Providers — kernel loading, SPICE operations, data provider pattern
• Time & Windows — Time, Window, time frame conversions
• Frames & Orientation — reference frames, StateOrientation, Earth orientation (Pro)
• Celestial Bodies — CelestialBody, CelestialItem, physical properties
• Spacecraft — spacecraft modeling, components, body axes
• Sites — ground sites, launch sites, horizontal coordinates

Orbital Mechanics

Orbit representations and conversions.

• StateVector — Cartesian position/velocity state
• Keplerian Elements — classical orbital elements
• TLE — Two-Line Elements, SGP4/SDP4 propagation

Propagation

Numerical integration and force models.

• Propagators — CentralBodyPropagator, TLEPropagator, propagation solution
• Integrators — VVIntegrator, RK78Integrator (Pro)
• Force Models — gravity, drag, SRP, albedo (Pro), thermal (Pro)
• Propagator Builder — fluent builder API (Pro)
• Event Detection — g-function zero-crossing, BisectionEventFinder (Pro)

Maneuvers

Orbital and attitude maneuvers.

• Impulse Maneuvers — event-driven orbital maneuvers
• Attitudes — pointing modes, TRIAD attitude
• Lambert Solver — transfer orbit computation

SSA (Pro)

Space situational awareness.

• Conjunction Assessment — screening, analysis, collision probability
• Avoidance Studies — impulsive avoidance trade studies

CCSDS

Standards-compliant data interchange.

• CDM — Conjunction Data Message (Pro)
• OMM — Orbit Mean-elements Message
• OPM — Orbit Parameter Message

Utilities

Math, constants, and predefined objects.

• Math — Vector3, Quaternion, Matrix, Lagrange, Tsiolkovski
• Enumerations — Aberration, OccultationType, ShapeType, etc.
• Predefined Objects — solar system bodies, barycenters, frames