Starlink Train Tonight
Find recent Starlink launch groups and calculate their best viewing opportunities near you.
How to use this tracker
A newly launched group is most train-like before its satellites spread into operational orbits. Predictions remain estimates and clouds are not modeled.
Starlink Train Tonight is designed for recently launched Starlink groups that may still appear close together in the sky. The interactive sky dome uses propagated orbital positions and lets you inspect recent launch groups, horizon counts, trails and estimated pass opportunities from your location.
How the Starlink train prediction works
The tool uses a recent-launch catalog from CelesTrak, groups satellites by launch, and propagates their positions with SGP4. For the next-pass view it samples representative satellites from a launch group to estimate optical opportunities over the next 12 hours. These are estimates, not guaranteed sightings for every spacecraft in the group.
Use the location search or device location, then switch among available launch groups. The accelerated mode helps you visualize how the group crosses the local sky, while live mode keeps the sky view tied to current time.
When a Starlink train is easiest to notice
Newly deployed satellites can remain comparatively close together before orbital raising and phasing spread them around the constellation. They are typically easiest to notice when they are sunlit while your local sky is already dark enough. Cloud, haze and light pollution can still prevent a sighting.
Data source and limitations
Orbital elements come from CelesTrak and are propagated in the browser. Because Starlink satellites maneuver, predictions based on older orbital elements can degrade; always check the source freshness shown by the tool close to your planned viewing time.
Related Starlink tools
Use the Starlink Live Tracker for the wider constellation and individual satellite selection. For a broader set of bright objects, open Satellites Above Me Tonight.