{
  "version": "1.0.0",
  "generated": "2026-10-05",
  "stars": {
    "title": "HYG Star Database v4.1",
    "author": "David Nash / Astronomy Nexus",
    "source": "https://github.com/astronexus/HYG-Database/blob/main/hyg/CURRENT/hygdata_v41.csv",
    "license": "CC BY-SA 4.0",
    "licenseUrl": "https://creativecommons.org/licenses/by-sa/4.0/",
    "modifications": "Selected non-Sun records with magnitude <=6.5; retained id, proper name, RA, Dec, magnitude, colour index; converted CSV to JSON. J2000 positions, without proper motion.",
    "records": 8920,
    "componentNote": "Multiple-star component records are retained separately; close components can overlap in the illustrative rendering.",
    "outputSha256": "971f1f20ffa990ff32d45c5118919b89559b3f688b6a33f6f112393166f98385",
    "sha256": "d9f69fd86bbf90a4e4d52b4c5c53eacfa6dfc0bfdef85bfd94f095e0bebe4ebd"
  },
  "coastlines": {
    "title": "Natural Earth 1:110m coastline",
    "source": "https://github.com/nvkelso/natural-earth-vector/blob/master/geojson/ne_110m_coastline.geojson",
    "license": "Public domain",
    "licenseUrl": "https://www.naturalearthdata.com/about/terms-of-use/",
    "modifications": "Geometry line coordinates extracted to JSON, feature properties removed.",
    "outputSha256": "045eaf98b5631f2e53efd48940f1847c91ea09ac3b9082717bc765fdd45f1d27",
    "sha256": "851f581ff5ffb844deed8ae1a9ce22e3c4bb3d74fa342cadb5d8e39b41ae7c3c"
  },
  "renderer": {
    "title": "Three.js 0.186.1",
    "license": "MIT",
    "notice": "/data/explore/three-license.txt"
  },
  "visuals": "Original procedural illustrations, not photographs. No Gods Eye View code or assets included."
}