{
  "center_ra_dec_deg": [
    124.35718185983289,
    -11.775917781695147
  ],
  "field_size_deg": [
    0.7637365950603672,
    0.6111903254974705
  ],
  "original_pixel_scale_arcsec": 0.4523612606477989,
  "reference_matches": 25,
  "held_out_stars": 5,
  "validation": "held out from distortion fitting; may have participated in blind field identification",
  "source_sha256": "069546740bdd54763f1a410615ff84a8d6f7c0fd604b27739ab10e0ee0c27525",
  "source": "pi4146-47.tif",
  "kind": "multiple-exposure star field",
  "grouped_exposures": true,
  "reference_index": "index-4206-09.fits",
  "distortion_models": [
    {
      "order": 1,
      "train_stars": 19,
      "median_original_pixels": 3.29909625153246,
      "p90_original_pixels": 10.30048830124885
    }
  ],
  "selected_model": {
    "order": 1,
    "train_stars": 19,
    "median_original_pixels": 3.29909625153246,
    "p90_original_pixels": 10.30048830124885
  },
  "median_held_out_arcsec": 1.4923833393416512,
  "fit_validated": false,
  "inverse_sip_max_error_binned_pixels": null,
  "center_hms_dms": "08h17m25.72364636s -11d46m33.3040141s",
  "caveat": "No catalogue proper-motion propagation to plate epoch; unsupported borders are extrapolations."
}