SATELLITE CATEGORY GUIDE
Geostationary Satellite Directory: Why the Spacecraft Appear Fixed in the Sky
Geostationary satellites occupy a special form of geosynchronous orbit above Earth's equator. Their orbital period matches Earth's rotation and, when the orbit is close to circular and equatorial, the spacecraft remains near the same longitude from the ground.
Geostationary versus geosynchronous
Every geostationary orbit is geosynchronous, but not every geosynchronous orbit is geostationary. Inclination or eccentricity causes a geosynchronous spacecraft to move north-south or east-west in the sky instead of remaining at one nearly fixed point. Operational station-keeping is used to keep geostationary spacecraft within assigned orbital regions.
At roughly 35,786 kilometres altitude above the equator, these spacecraft are far more distant than LEO satellites. Their ground motion looks slow, and a single spacecraft can view a very large portion of Earth.
Where this orbit is used
Geostationary orbit is widely used for communications and weather monitoring. Compare the directory with the GOES tracker and Weather Satellite Trackers. Then open Bright Satellites to see how different the fast motion of low-orbit visual targets can be.
How this directory works
This directory is most useful for comparing individual geostationary spacecraft by orbital slot and catalog identity. Open one object to inspect its calculated longitude and observer geometry; a truly geostationary satellite should remain near the same apparent region of the sky rather than crossing rapidly overhead.
Small inclination, eccentricity and station-keeping effects can make a real geostationary spacecraft trace a limited daily motion instead of appearing mathematically fixed. Public orbital elements describe the orbit, while operator sources remain authoritative for spacecraft health and service status.
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 a geostationary spacecraft and open its tracker to calculate where it appears from your chosen observer location.
Sources and related tools
- CelesTrak: General Perturbations data formats
- NASA: What is a satellite?
- 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.