Titan (unsupported)

Titan is a body, but its opaque haze hides the surface: the visible “limb” is the haze top, which varies with wavelength, and at high phase Titan is not even a circle. Ellipsoid limb / terminator / disc navigation is therefore systematically wrong rather than merely noisy, so no autonomous technique navigates Titan today.

NavModelTitan renders no navigable feature for Titan; it records a no-result instead. A frame whose only content is Titan fails with TITAN_UNSUPPORTED rather than a silent empty failure, while a Titan-bearing frame that also holds a resolved moon, a ring, or stars navigates on that other content.

Planned support

A haze-aware limb-fit technique with per-filter haze profiles is planned but not yet implemented. When it is added it will replace the recorded no-result with a real Titan navigation contribution. The model documentation is Titan Navigation Model.