Deterministic calculation and uncertainty workflow

Tropical-to-sidereal transform receipt

Apply a named angular offset while retaining both coordinate values.

Required inputs

Tropical longitude

Ayanāṁśa value

Ayanāṁśa method and version

Epoch

Ordered execution

Work the protocol

  1. 1

    Validate both angles.

  2. 2

    Subtract the declared offset.

  3. 3

    Normalize the result.

  4. 4

    Retain tropical and sidereal values separately.

  5. 5

    Digest the complete transform.

Outputs

  • Sidereal longitude
  • Applied offset
  • Calculation receipt

Done only when

  • Subtraction and normalization reproduce.
  • Method/version remain attached.
  • Boundary distance can be calculated downstream.

Fail closed

Refusal conditions

  • The offset convention is unnamed.
  • The tropical value is overwritten.
  • The offset is inferred from a desired sign.

Recomputable fixture

Calculation receipt

The output and digest are derived from the displayed inputs. The fixture demonstrates the operation, not an astrological prediction.

operation sidereal-transform

input.tropicalDegrees 120

input.ayanamsaDegrees 24

output.siderealDegrees 96

sha256:9a81eceeb3f6ec39f6d867748316b876fb83b6c2061736450d8d0f5ab57ea6ab

Uncertainty: The fixture arithmetic is deterministic; real uncertainty inherits the ephemeris and selected ayanāṁśa implementation.