{
  "id": "UN1173",
  "name": "second (sidereal)",
  "ml_name": "ip_s_{sidereal}",
  "symbol": "sidereal_s",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#S"
}