Know which conjunctions actually matter.
OrbitalGuard ingests public satellite catalog data, propagates trajectories, and screens for close approaches, giving CubeSat teams, researchers, and small operators clear, sourced risk assessments without a flight-dynamics department.
No signup needed. One click into a shared demo account with real, live catalog data. Or create your own free account.
Data sourced from publicly available catalogs, starting with CelesTrak
Built for teams without a flight-dynamics department
CubeSat teams
Get conjunction screening and watchlist alerts on your own spacecraft without standing up a flight-dynamics team.
Researchers
Explore public-catalog orbital data with transparent methodology: every number shows its data source, epoch, and age.
Satellite operators
Monitor specific objects, track how conjunction risk evolves over time, and get explainable, sourced risk classifications.
Everything you need to monitor collision risk
Track
See tracked objects around a real-time 3D Earth globe with orbit paths, filtering, and search, powered by CesiumJS.
Analyze
Broad-phase candidate filtering followed by numerical TCA refinement produces explainable LOW/WATCH/ELEVATED/HIGH risk labels, never a bare score.
Monitor
Add objects to a watchlist and track how their conjunction risk evolves over time, with a full history of past encounters.
Alert
Get notified in-app when a monitored object's risk crosses a threshold you set, with spam-safe deduplication.
Real screens, real catalog data
Every screenshot below is the live product against real, ingested CelesTrak data. Nothing is staged.
3D orbital map
Track real objects around a live Earth globe, powered by CesiumJS and public catalog data.
Dashboard
A live overview of tracked objects, screened encounters, and data freshness at a glance.
Conjunctions
Every predicted close approach, with miss distance, relative velocity, and time to closest approach.
Watchlist
Monitor specific objects, set alert thresholds, and see how their risk has changed over time.
The ISS conjunction workflow, end to end
Every step below uses the same catalog data shown in the demo. Nothing is staged.
Search a satellite
Find any publicly catalogued object, try "ISS", and see its current position, altitude, speed, and data freshness.
See predicted close approaches
OrbitalGuard screens the catalog and shows encounters with TCA, miss distance, relative velocity, and why each was classified the way it was.
Watch it and get alerted
Add objects to a watchlist, set a risk threshold, and get an in-app alert when something changes, with risk history to see the trend.
How the numbers are actually calculated
OrbitalGuard performs public-data screening. It supports decision-making; it is not a replacement for operational conjunction assessment or a qualified flight-dynamics process.
Propagation uses SGP4 against mean orbital elements from public GP/OMM data. Accuracy degrades as the element set ages, every object shows its source epoch and data age.
Time of Closest Approach is found by numerically minimizing SGP4-propagated relative distance. Broad-phase orbital-shell and coarse-sampling filters narrow candidates first, then a golden-section search converges on the precise minimum.
Risk levels (LOW / WATCH / ELEVATED / HIGH) are OrbitalGuard-defined thresholds from miss distance and relative velocity, not an international standard, and every classification lists its specific reasons.
Collision probability is never fabricated. Pc requires covariance/uncertainty data not present in public TLE/OMM data, so it is not computed. The product says so explicitly rather than guessing.
Today: CelesTrak
Scheduled ingestion of CelesTrak's GP/OMM and SATCAT data. Object elements, classification, launch/decay status, and operator info, refreshed on a per-source-group basis.
Designed to extend
The ingestion architecture is provider-agnostic by design, built to add Space-Track, CCSDS CDM feeds, operator ephemerides, or commercial SSA data without re-architecting the core.
What this product is not
Stated plainly, because collision risk software that oversells itself is dangerous.
- Only sees objects present in its configured data sources, not “all space debris.”
- Public GP/TLE/OMM screening is not operational-grade conjunction assessment.
- No collision probability is fabricated. Pc requires covariance data this product doesn't have yet.
- Decision-support only. Real spacecraft safety decisions require authoritative conjunction data and a qualified flight-dynamics process.
See it running on real data
One click, no signup. This demo runs on the same catalog data as the full product.