generated: '2026-07-19'
method: derived
source: openapi/kayhan-space-satcat-openapi-original.json
note: >-
  Entity-relationship graph derived from Satcat Service API OpenAPI schemas ($ref links
  and id-reference fields). 193 component schemas; 151 operations across 17 tags.
entities:
- Catalog
- RSO
- Ephemeris
- TLE
- ConjunctionMessage (CDM)
- Event
- Screening
- Propagation
- StateVector
- CovarianceMatrix
- Maneuver
- APIKey
- Group
relationships:
- from: Group
  to: APIKey
  type: has_many
  via: "client_id"
- from: Catalog
  to: Ephemeris
  type: has_many
  via: "catalog id"
- from: RSO
  to: Ephemeris
  type: has_many
  via: "norad_id"
  note: "current operational ephemeris per resident space object"
- from: RSO
  to: TLE
  type: has_many
  via: "norad_id"
- from: Ephemeris
  to: StateVector
  type: has_many
  via: "ephemeris id"
- from: Ephemeris
  to: CovarianceMatrix
  type: has_one
  via: "covariance"
- from: Event
  to: ConjunctionMessage
  type: has_many
  via: "event_key"
  note: "CDMs attached to a conjunction event"
- from: Screening
  to: ConjunctionMessage
  type: has_many
  via: "screening id"
  note: "screening produces conjunctions/CDMs"
- from: Screening
  to: RSO
  type: has_many
  via: "primaries/secondaries"
- from: Propagation
  to: StateVector
  type: has_many
  via: "propagation id"
- from: ConjunctionMessage
  to: RSO
  type: belongs_to
  via: "primary/secondary object"
- from: Event
  to: Mitigation
  type: has_many
  via: "mitigation intent"