{
  "center_ra_dec_deg": [
    113.66092671026571,
    31.890318035783807
  ],
  "field_size_deg": [
    0.7601379357117619,
    0.6107219886524629
  ],
  "original_pixel_scale_arcsec": 0.45201462975922413,
  "reference_matches": 16,
  "held_out_stars": 5,
  "validation": "held out from distortion fitting; may have participated in blind field identification",
  "source_sha256": "29f6a1d64cc205cbf379a1114a239f99b00e8dff2c2478e93a90e2fac6129537",
  "source": "pi4197-98.tif",
  "kind": "unclassified",
  "grouped_exposures": true,
  "reference_index": "index-4207-01.fits",
  "fit_validated": false,
  "limitation": "Too few unused reference matches for a held-out distortion fit; retaining blind solution",
  "inverse_sip_max_error_binned_pixels": 3.2155493553843715e-13,
  "center_hms_dms": "07h34m38.62241046s +31d53m25.14492882s",
  "caveat": "No catalogue proper-motion propagation to plate epoch; unsupported borders are extrapolations."
}