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Documentation / @interstellar-tools/types / CwState

Type Alias: CwState ​

ts
type CwState = readonly [number, number, number, number, number, number];

Defined in: orbits.ts:37

Clohessy–Wiltshire / Hill relative-motion state vector in the LVLH frame.

Axes (LVLH / RSW-style):

  • x — radial (outward from the central body / reference orbit radius)
  • y — along-track / tangential (direction of motion of the reference orbit)
  • z — cross-track (completes right-handed frame, roughly orbit-normal)

Components:

  • x, y, z are relative position components.
  • xDot, yDot, zDot are relative velocity components (time derivatives).

Units:

  • Positions in meters or kilometers (choose one and stay consistent).
  • Velocities in m/s or km/s accordingly.

This tuple is commonly used as the state for integrating the CW/Hill ODEs.

Example ​

ts
const s: CwState = [
  100, // x (m)
  0, // y (m)
  0, // z (m)
  0, // xDot (m/s)
  0.01, // yDot (m/s)
  0 // zDot (m/s)
];