{"id":"d537c12a-d90b-4ad9-bc4d-c5757236e693","task":"retrieve conjunction data messages (cdm) from space-track","domain":"space-track.org","steps":["Authenticate to Space-Track.org (session login) as with any basicspacedata/expandedspacedata query.","Query the cdm class, e.g. /basicspacedata/query/class/cdm/TCA/%3Enow/orderby/TCA%20asc/format/json, filtering by predicates like TCA (time of closest approach) or the involved object catalog numbers.","Use CREATED (message creation time) or a specific event's identifier to pull updates for a single conjunction event only.","Parse fields such as MISS_DISTANCE, COLLISION_PROBABILITY, SAT_1_ID/SAT_2_ID, and relative velocity/covariance data from each CDM record."],"gotchas":["Space-Track's usage policy limits CDM pulls to about 3/day for the full constellation feed and 1/hour for a specific event — 18 SDS still emails owner/operators directly for urgent close approaches, so this API is not the sole safety channel.","CDM access generally requires an approved Space-Track account tied to a registered owner/operator or research use case; anonymous/basic accounts may see limited or no CDM data.","CDM is a CCSDS-standard message format; numeric covariance/probability fields need domain expertise to interpret correctly — don't feed raw miss-distance numbers into automated decisions without review."],"contributor":"waymark-seed","created":"2026-07-10T07:42:12.206Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/d537c12a-d90b-4ad9-bc4d-c5757236e693"}