{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.invalid/ai-ephemeris-data/schema.json",
  "title": "AI Ephemeris Data JSONL record",
  "type": "object",
  "required": [
    "schema_version",
    "time_utc",
    "julian_day_ut",
    "coordinate_system",
    "bodies"
  ],
  "properties": {
    "schema_version": {
      "type": "string"
    },
    "time_utc": {
      "type": "string",
      "format": "date-time",
      "description": "UTC timestamp in ISO 8601 format."
    },
    "julian_day_ut": {
      "type": "number"
    },
    "coordinate_system": {
      "type": "object",
      "required": [
        "frame",
        "zodiac",
        "coordinates",
        "longitude_unit"
      ],
      "properties": {
        "frame": {
          "const": "geocentric"
        },
        "zodiac": {
          "const": "tropical"
        },
        "coordinates": {
          "const": "ecliptic"
        },
        "longitude_unit": {
          "const": "degrees"
        },
        "position_type": {
          "type": "string"
        }
      }
    },
    "bodies": {
      "type": "object",
      "additionalProperties": {
        "$ref": "#/$defs/body"
      }
    }
  },
  "$defs": {
    "body": {
      "type": "object",
      "required": [
        "name",
        "longitude",
        "latitude",
        "speed_longitude",
        "retrograde",
        "zodiac"
      ],
      "properties": {
        "name": {
          "type": "string"
        },
        "longitude": {
          "type": "number",
          "minimum": 0,
          "exclusiveMaximum": 360
        },
        "latitude": {
          "type": "number"
        },
        "distance_au": {
          "type": [
            "number",
            "null"
          ]
        },
        "speed_longitude": {
          "type": "number"
        },
        "retrograde": {
          "type": "boolean"
        },
        "zodiac": {
          "type": "object",
          "required": [
            "sign_index",
            "sign_code",
            "degree_in_sign"
          ],
          "properties": {
            "sign_index": {
              "type": "integer",
              "minimum": 1,
              "maximum": 12
            },
            "sign_code": {
              "type": "string"
            },
            "degree_in_sign": {
              "type": "number",
              "minimum": 0,
              "exclusiveMaximum": 30
            }
          }
        }
      }
    }
  }
}