{
  "source": "HYG v4.1",
  "url": "https://github.com/astronexus/HYG-Database/blob/main/hyg/CURRENT/hygdata_v41.csv",
  "author": "David Nash / Astronexus and contributors",
  "license": "CC BY-SA 4.0",
  "license_url": "https://creativecommons.org/licenses/by-sa/4.0/",
  "source_sha256": "d9f69fd86bbf90a4e4d52b4c5c53eacfa6dfc0bfdef85bfd94f095e0bebe4ebd",
  "epoch": "J2000.0",
  "total_rows": 119626,
  "included": 109401,
  "excluded_missing_or_dubious_distance": 10225,
  "binary": "little-endian float32: X,Y,Z in pc; V magnitude; B-V index (0.65 fallback)",
  "metadata_columns": [
    "HYG id",
    "HIP id",
    "name/designation",
    "spectrum",
    "distance pc",
    "V mag",
    "luminosity solar"
  ],
  "R0_pc": 8178,
  "sun_height_pc": 0,
  "notes": "Sun height neglected. Distances are catalogue estimates, not exact. All catalogue points are fixed at J2000. Model particles are separate."
}