{
  "generated_at": "2026-09-06T08:06:16+00:00",
  "source": "AT-HYG v4.0 (athyg_40_reduced_m10)",
  "source_url": "https://codeberg.org/astronexus/athyg",
  "license": "CC BY-SA 4.0",
  "attribution": "AT-HYG by David Nash / astronexus; distance and velocity data derived from ESA/Gaia/DPAC (Gaia DR3)",
  "modifications": [
    "距離をパーセクから光年に換算(x3.261564)",
    "視差欠損の番兵値(distance >= 100000)を除去",
    "太陽から半径100光年で切り出し",
    "表示名と安定IDを付与"
  ],
  "radius_ly": 100.0,
  "systems": 4214,
  "input_rows": 332178,
  "filtered": {
    "no_distance": 2317,
    "sentinel": 92,
    "out_of_radius": 325555
  },
  "id_collisions_resolved": 2,
  "max_position_error": 3.3e-05
}