{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/api-evangelist/nasa/blob/main/json-schema/coronal-mass-ejection.json",
  "title": "Coronal Mass Ejection",
  "description": "A coronal mass ejection event from NASA's DONKI space weather database.",
  "type": "object",
  "properties": {
    "activityID": {
      "type": "string",
      "description": "Unique identifier for the CME event."
    },
    "catalog": {
      "type": "string",
      "description": "Source catalog for the event."
    },
    "startTime": {
      "type": "string",
      "format": "date-time",
      "description": "Start time of the CME event."
    },
    "sourceLocation": {
      "type": "string",
      "description": "Location on the Sun where the CME originated."
    },
    "activeRegionNum": {
      "type": "integer",
      "description": "Active region number on the Sun."
    },
    "note": {
      "type": "string",
      "description": "Additional notes about the event."
    },
    "instruments": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "displayName": { "type": "string" }
        }
      }
    },
    "cmeAnalyses": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "time21_5": { "type": "string", "format": "date-time" },
          "latitude": { "type": "number" },
          "longitude": { "type": "number" },
          "halfAngle": { "type": "number" },
          "speed": { "type": "number" },
          "type": { "type": "string" },
          "isMostAccurate": { "type": "boolean" }
        }
      }
    }
  },
  "required": ["activityID", "startTime"]
}