Conjunction Analysis

Conjunction modules screen catalog pairs, refine events, and produce close-approach products that OrbPro2 can display and query.

What it can do

Compute time of closest approach, miss distance, encounter geometry, covariance transforms, probability of collision, screening summaries, and event-quality flags.

Reference modules

space-data-network-modules/analysis/conjunction-assessment
space-data-network-modules/propagator/sgp4

Contract shape

Inputs include primary and secondary state histories, covariance, screening windows, hard-body radius, and propagator policy. Outputs include event records, probability metrics, and geometry samples.

Authoring checklist

Preserve object identity and epoch provenance in every event.
Use explicit covariance frames and transform metadata.
Validate against known conjunction benchmarks and edge cases.
Return deterministic failure records for missing covariance or invalid geometry.