SATELLITE CATEGORY GUIDE
Active Satellite Directory: A Broad Catalog Starting Point
The Active Satellites category is a broad catalog view intended to surface payloads currently grouped as active in the source data. It is useful when you do not yet know which mission family or constellation you want to explore.
“Active” is a catalog grouping, not a live health signal
The word active should be interpreted in the context of the source group. SpaceTracker.live does not independently verify spacecraft commanding, payload health, communications service or mission status. An orbital element can continue to be propagated even when operator circumstances have changed.
For that reason, use this directory to discover and identify objects, then consult an operator or agency when official status matters. The individual tracker is strongest at explaining orbital position and observer geometry, not mission operations.
Narrow the catalog when possible
If you know the mission type, a focused directory is usually easier to use: try Space Stations, Weather, GPS, Science or Geostationary. You can also use Advanced Search when you know a name, NORAD ID or COSPAR designator.
How this directory works
This directory is best used as a discovery index. Open one catalog entry to move from the broad active group to a single object with its own NORAD identity and propagated orbit. From there the individual tracker can calculate current position and observer-relative geometry for the location you have set.
The active label describes a source catalog group, not a real-time health check. Orbital elements can remain usable even when mission status is uncertain, and recently manoeuvred or low-orbit objects can diverge more quickly from an older element set. Use the responsible operator or agency when operational status matters.
What to remember about accuracy
Frequently asked questions
Is the position direct spacecraft telemetry?
No. The live map is calculated from public orbital elements.
Does appearing in this directory mean a satellite is operational?
No. Catalog membership and mission status are different things.
Can I track one object in more detail?
Yes. Select an object from the active catalog, open its individual tracker, and use your saved observer location for azimuth, elevation, range and pass geometry.
Sources and related tools
- CelesTrak: General Perturbations data formats
- SpaceTracker.live Satellite Directory
- How SpaceTracker.live calculates positions
Educational-use note: SpaceTracker.live is an independent educational website. Positions and pass predictions are calculated from third-party orbital elements and may be delayed or approximate. Do not use them for navigation, collision avoidance or other safety-critical decisions.