Live satellite tracking for the whole world
Rev Sat Watch plots every active satellite orbiting Earth on a 3D globe or a flat map and updates positions continuously. Pick a group such as Starlink, GPS or weather satellites, search by name or NORAD catalog number, and tap any satellite to see its altitude, speed, orbit path, coverage footprint, whether it is in sunlight, and when it next passes over you.
What you can do
- 3D globe or 2D map with day and night shown where they really are.
- Time travel: pause, step, or run time up to 3600× to watch orbits unfold, then return to now.
- Visible passes: seven-day predictions for your location, marked when the satellite is sunlit against a dark sky, with one-tap calendar export.
- Sky view: a live chart of every satellite above your horizon.
- Share links that open straight to a satellite.
How it works
Each satellite's orbit is published as a NORAD two-line element set. Rev Sat Watch downloads the current sets from CelesTrak and runs the SGP4 propagator, the orbital model the element sets are built for, in your browser to compute where each satellite is at this exact second.
- Cyan — low Earth orbit (under about 2,000 km): ISS, Starlink, imaging satellites.
- Amber — medium Earth orbit: GPS, Galileo, GLONASS.
- Magenta — geostationary orbit, about 35,786 km: TV, weather, communications.
- Green — highly elliptical orbits.
Frequently asked questions
How accurate is the satellite tracking?
For a fresh element set, the computed position is typically within about 1 to 3 km of the true position. The error grows by a few kilometers per day as the element set ages, and faster for satellites that are maneuvering or about to re-enter. The details panel shows the age of each satellite's data so you can judge it. Predictions far from the present are less accurate for the same reason.
Is this a live feed from the satellites?
No. Satellites do not broadcast a public position feed. Like every public tracker, this app calculates where each satellite is right now from its published orbit.
Can I see when the ISS passes over my house?
Yes. Tap ISS, set your location, then Predict Passes. Passes marked visible are those where the station is in sunlight while your sky is dark. Weather still decides whether you see it.
How many satellites does it track?
The default view loads every active satellite in the public catalog: more than ten thousand objects. Classified satellites without published orbits are not included.