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Celestial Rotations

github-actions[bot] edited this page Jun 6, 2026 · 1 revision

Celestial rotations are the primary way that orientations are defined in the universe.

Velocity

A rotation defined by an angular velocity.

type (required): velocity

starting_date (optional): The AbsoluteDate of the celestial rotation.

starting_rotation (optional): The Rotation of the celestial rotation at starting_date.

velocity (required): The Vector3D angular velocity in rad/s of the celestial rotation.

Period

A rotation defined by the period.

type (required): period

starting_date (optional): The AbsoluteDate of the celestial rotation.

starting_rotation (optional): The Rotation of the celestial rotation at starting_date.

rotation_axis (required): The Vector3D axis of the celestial rotation.

period_seconds (required): The number of seconds it takes for the celestial rotation to complete a rotation.

Spin-Orbit Resonance

A rotation defined by resonance with the orbit period.

type (required): tidal_lock

starting_date (optional): The AbsoluteDate of the celestial rotation.

starting_rotation (optional): The Rotation of the celestial rotation at starting_date.

rotation_axis (optional, defaults to the orbit axis): The Vector3D axis of the celestial rotation.

rotations_per_orbit (required): The number of rotations completed every orbit. Can be less than one.

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