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FA-55486 / Astronomical coordinate conventions / Open access

Planetary body fixed labels: Planetographic latitude adapter applies the inverse supplied flattening factor · case 01

The adapter reports an incorrect geodetic tangent while other fields remain valid.

Verified by executionVariant 1 · 6 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Planetographic latitude adapter applies the inverse supplied flattening factor. Faulty expression: d['g']/d['latratio']

THE FAILURE

Planetographic latitude adapter applies the inverse supplied flattening factor. Faulty expression: d['g']/d['latratio']

Unsuccessful approach: A partial convention repair still uses d['g']

Case contract

This explicitly stipulated planetary atlas uses west-positive input longitude W, east-positive prime-meridian angle P, latitude B, and an equatorial mirror flag for a southern view. Body-fixed east longitude is -W; inertial longitude adds P. Supplied sin-latitude ratio g is already calibrated and not recomputed. Output fields are defined by: east_longitude = (-d['W'])%360; inertial_longitude = (d['P']-d['W'])%360; view_latitude = -d['B'] if d['south'] else d['B']; geodetic_tangent = d['g']*d['latratio']; future_prime_meridian = (d['P']+d['rate']*d['dt'])%360; future_body_longitude = (-d['W']-d['rate']*d['dt'])%360

Why this case matters

Catalog, detector, sky-coordinate, and spectroscopy adapters must preserve the association between numeric coordinates and their declared reference conventions.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(d):
    return {'east_longitude': (-d['W'])%360, 'inertial_longitude': (d['P']-d['W'])%360, 'view_latitude': -d['B'] if d['south'] else d['B'], 'geodetic_tangent': d['g']/d['latratio'], 'future_prime_meridian': (d['P']+d['rate']*d['dt'])%360, 'future_body_longitude': (-d['W']-d['rate']*d['dt'])%360}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'W': 40, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 350, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 10, 'inertial_longitude': 40, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 356}), ({'W': 40, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 40, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 40, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 320}), ({'W': 40, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 320, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 328})], 2: [({'W': 41, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 351, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 9, 'inertial_longitude': 39, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 355}), ({'W': 41, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 41, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 41, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 319}), ({'W': 41, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 319, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 327})], 3: [({'W': 42, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 352, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 8, 'inertial_longitude': 38, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 354}), ({'W': 42, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 42, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 42, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 318}), ({'W': 42, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 318, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 326})], 4: [({'W': 43, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 353, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 7, 'inertial_longitude': 37, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 353}), ({'W': 43, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 43, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 43, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 317}), ({'W': 43, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 317, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 325})], 5: [({'W': 44, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 354, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 6, 'inertial_longitude': 36, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 352}), ({'W': 44, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 44, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 44, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 316}), ({'W': 44, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 316, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 324})]}
for i, (record, expected) in enumerate(fixtures[N]):
    check('astronomical fixture %s' % i, solve(record), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
astronomical fixture 0{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 0.6666666666666666, 'inertial_longitude': 60, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': 20}Failed
astronomical fixture 1{'east_longitude': 10, 'future_body_longitude': 356, 'future_prime_meridian': 44, 'geodetic_tangent': 0.6666666666666666, 'inertial_longitude': 40, 'view_latitude': 20}{'east_longitude': 10, 'future_body_longitude': 356, 'future_prime_meridian': 44, 'geodetic_tangent': 6, 'inertial_longitude': 40, 'view_latitude': 20}Failed
astronomical fixture 2{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 0.6666666666666666, 'inertial_longitude': 60, 'view_latitude': -20}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': -20}Failed
astronomical fixture 3{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': -0.6666666666666666, 'inertial_longitude': 60, 'view_latitude': -30}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': -6, 'inertial_longitude': 60, 'view_latitude': -30}Failed
astronomical fixture 4{'east_longitude': 320, 'future_body_longitude': 320, 'future_prime_meridian': 100, 'geodetic_tangent': 0.6666666666666666, 'inertial_longitude': 60, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 320, 'future_prime_meridian': 100, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': 20}Failed
astronomical fixture 5{'east_longitude': 320, 'future_body_longitude': 328, 'future_prime_meridian': 352, 'geodetic_tangent': 0.6666666666666666, 'inertial_longitude': 320, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 328, 'future_prime_meridian': 352, 'geodetic_tangent': 6, 'inertial_longitude': 320, 'view_latitude': 20}Failed

SHA-256 / 06e30c2802b61f6192480f8913d2c19f3f385cb646839590920e0564bc4b882a

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(d):
    return {'east_longitude': (-d['W'])%360, 'inertial_longitude': (d['P']-d['W'])%360, 'view_latitude': -d['B'] if d['south'] else d['B'], 'geodetic_tangent': d['g'], 'future_prime_meridian': (d['P']+d['rate']*d['dt'])%360, 'future_body_longitude': (-d['W']-d['rate']*d['dt'])%360}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'W': 40, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 350, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 10, 'inertial_longitude': 40, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 356}), ({'W': 40, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 40, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 306}), ({'W': 40, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 320, 'inertial_longitude': 60, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 320}), ({'W': 40, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 320, 'inertial_longitude': 320, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 328})], 2: [({'W': 41, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 351, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 9, 'inertial_longitude': 39, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 355}), ({'W': 41, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 41, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 305}), ({'W': 41, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 319, 'inertial_longitude': 59, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 319}), ({'W': 41, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 319, 'inertial_longitude': 319, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 327})], 3: [({'W': 42, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 352, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 8, 'inertial_longitude': 38, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 354}), ({'W': 42, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 42, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 304}), ({'W': 42, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 318, 'inertial_longitude': 58, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 318}), ({'W': 42, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 318, 'inertial_longitude': 318, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 326})], 4: [({'W': 43, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 353, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 7, 'inertial_longitude': 37, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 353}), ({'W': 43, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 43, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 303}), ({'W': 43, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 317, 'inertial_longitude': 57, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 317}), ({'W': 43, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 317, 'inertial_longitude': 317, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 325})], 5: [({'W': 44, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 354, 'P': 30, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 6, 'inertial_longitude': 36, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 44, 'future_body_longitude': 352}), ({'W': 44, 'P': 100, 'B': 20, 'south': True, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': -20, 'geodetic_tangent': 6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 44, 'P': 100, 'B': -30, 'south': False, 'g': -2, 'latratio': 3, 'rate': 7, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': -30, 'geodetic_tangent': -6, 'future_prime_meridian': 114, 'future_body_longitude': 302}), ({'W': 44, 'P': 100, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': 7, 'dt': 0}, {'east_longitude': 316, 'inertial_longitude': 56, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 100, 'future_body_longitude': 316}), ({'W': 44, 'P': 0, 'B': 20, 'south': False, 'g': 2, 'latratio': 3, 'rate': -4, 'dt': 2}, {'east_longitude': 316, 'inertial_longitude': 316, 'view_latitude': 20, 'geodetic_tangent': 6, 'future_prime_meridian': 352, 'future_body_longitude': 324})]}
for i, (record, expected) in enumerate(fixtures[N]):
    check('astronomical fixture %s' % i, solve(record), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
astronomical fixture 0{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 2, 'inertial_longitude': 60, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': 20}Failed
astronomical fixture 1{'east_longitude': 10, 'future_body_longitude': 356, 'future_prime_meridian': 44, 'geodetic_tangent': 2, 'inertial_longitude': 40, 'view_latitude': 20}{'east_longitude': 10, 'future_body_longitude': 356, 'future_prime_meridian': 44, 'geodetic_tangent': 6, 'inertial_longitude': 40, 'view_latitude': 20}Failed
astronomical fixture 2{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 2, 'inertial_longitude': 60, 'view_latitude': -20}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': -20}Failed
astronomical fixture 3{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': -2, 'inertial_longitude': 60, 'view_latitude': -30}{'east_longitude': 320, 'future_body_longitude': 306, 'future_prime_meridian': 114, 'geodetic_tangent': -6, 'inertial_longitude': 60, 'view_latitude': -30}Failed
astronomical fixture 4{'east_longitude': 320, 'future_body_longitude': 320, 'future_prime_meridian': 100, 'geodetic_tangent': 2, 'inertial_longitude': 60, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 320, 'future_prime_meridian': 100, 'geodetic_tangent': 6, 'inertial_longitude': 60, 'view_latitude': 20}Failed
astronomical fixture 5{'east_longitude': 320, 'future_body_longitude': 328, 'future_prime_meridian': 352, 'geodetic_tangent': 2, 'inertial_longitude': 320, 'view_latitude': 20}{'east_longitude': 320, 'future_body_longitude': 328, 'future_prime_meridian': 352, 'geodetic_tangent': 6, 'inertial_longitude': 320, 'view_latitude': 20}Failed

SHA-256 / fdafdb57d4673405aa8f2f9a5cd38aedb99b492e19fa26706e7a57732bbb3f71

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 6 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

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Verification & scope

Explicitly stipulated finite algebraic adapter; no standards conformance, physical accuracy, or production-library claim. Inputs are the documented finite valid model domain. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:45:58.428143+00:00.

Case digest / eb05f0b3607d33f23f027865fbc5af79660f45096e0bd9b56e0a10feb86b49db