{
  "id": "UN1207",
  "name": "year (sidereal)",
  "ml_name": "ip_year_{sidereal}",
  "symbol": "sidereal_year",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#Y"
}