keplerian
Domain-agnostic Keplerian dynamics in Rust: typed anomaly solvers,
classical elements, two-body propagation, Lambert transfers, and
transfer/search helpers built only on qtty and affn.
Scope
This crate owns reusable central-force / two-body dynamics that do not require astronomy-specific semantics.
In scope:
- elliptic, parabolic, and hyperbolic anomaly conversions and Kepler solves,
- typed Keplerian elements and typed Cartesian states,
- analytic two-body propagation under a fixed gravitational parameter,
- Lambert boundary-value solvers,
- transfer invariants and caller-driven Lambert search grids.
Out of scope:
- epochs, time scales, and calendars,
- ephemerides, bodies, observatories, or frame pipelines,
- non-Keplerian perturbation models.
Crate boundary
qtty ─── typed quantities and units
affn ─── typed geometry, frames, centers
│
└──> keplerian
Features
| Feature | Default | Effect |
|---|---|---|
std |
yes | Standard-library support via qtty. |
alloc |
no | Enables Vec-backed search grids. |
serde |
no | Serde derives for public data types. |
License
AGPL-3.0-only.