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        "separation_mas": 435.0,
        "pa_degrees": 214.1,
        "chi_square": 263.96084894251726,
        "negative2loglikelihood": 614.112265647783,
        "contrast": [
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        "stage": "refined"
      },
      {
        "separation_mas": 435.0,
        "pa_degrees": 214.6,
        "chi_square": 340.6929827287759,
        "negative2loglikelihood": 690.8443994340417,
        "contrast": [
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        "stage": "refined"
      }
    ],
    "interpretation": "Working Gaussian profile with one fixed empirical covariance and its log determinant. Expanded/refined grid minima are diagnostics, not calibrated astrometric intervals or a posterior."
  },
  "orientation_check": {
    "annular_peak_pixel": [
      71,
      80
    ],
    "header_cd_peak_pa_degrees": 212.6192430711928,
    "header_cd_peak_separation_mas": 419.6984484126669,
    "historical_published_pa_degrees": 211.6,
    "historical_published_sigma_pa_degrees": 1.3,
    "interpretation": "Image peak comparison checks orientation, not an independent high-precision astrometric calibration."
  },
  "limits": [
    "No exact nineteen-exposure membership or published 2014 reduction reproduced; supplied files were reduced in 2016.",
    "No ERR extension or calibrated gain: no invented Poisson electron error for reduced ADU.",
    "A constant historical J-band spot ratio is adopted across selected reduced channels; no precision chromatic calibration or uncertain bare-table off-axis throughput correction is applied.",
    "Observed-pixel and derived-image redistribution remains unresolved; this JSON stores numerical facts, not images.",
    "Local Gaussian-plus-plane registration and finite satellite templates are approximations; individual-template sensitivity is retained.",
    "The common 0.15-mag spot calibration is historical and not an independent per-channel noise term.",
    "AVPARANG/CD conventions are preserved. Original repeated SATS and PSFCENT headers are never overwritten.",
    "Within-exposure field smear and upstream lenslet spectral covariance are not fully modeled.",
    "An expanded and refined local position profile with fixed empirical covariance is not a posterior, a calibrated interval, or a global false-alarm probability."
  ]
}