Will Starlink be visible tonight?
Starlink visibility is a moving-target problem because thousands of spacecraft occupy different orbital planes. This tool loads current Starlink orbital records, performs a coarse search across tonight’s local observing window and then refines the most promising passes. A pass is treated as potentially visible when the satellite is high enough, the local sky is dark enough and the spacecraft is illuminated by the Sun rather than deep in Earth’s shadow. The result is a practical prediction, not a guarantee: individual Starlink spacecraft can be faint and their brightness changes with orientation and atmospheric conditions.
Starlink train versus individual satellites
The famous “train” appearance is most common shortly after a batch launch, before the satellites spread out into their operational orbits. Mature Starlink satellites are usually seen as individual moving points rather than a compact string. This page therefore searches active Starlink orbital records and lists candidate passes by spacecraft name. If you are specifically looking for a newly launched train, recent deployment information can matter as much as the general constellation. The main Starlink tracker lets you browse the wider active catalog.
How to read a Starlink pass
The maximum elevation tells you how high the satellite climbs above your horizon. A 70° pass crosses high in the sky, while a 10° pass stays low and is more easily blocked by terrain or buildings. The direction column shows where the satellite is located near the best part of the pass. Times are calculated for your selected observer. Look a few minutes before the listed best time and scan a broad area rather than staring at one exact point, because pass geometry and orbital data evolve.
Why a predicted pass may not be visible
Orbit geometry alone does not determine brightness. A satellite can pass above your horizon while it is in Earth’s shadow, while your local sky is still too bright, or while cloud blocks the view. Starlink brightness also varies because sunlight reflects differently from the spacecraft surfaces at different angles. The tool applies a basic sunlight and darkness test but does not model every reflection angle. Treat “potentially visible” as a good time to look, not as a promise that a bright object will appear.
How Starlink differs from the ISS
The International Space Station is much larger and often far brighter than an individual Starlink satellite. ISS passes are therefore easier to predict as obvious naked-eye events. Starlink satellites are smaller and can range from conspicuous to difficult. If you saw one exceptionally bright steady object, compare the time with ISS Visible Tonight. If you saw many lights following one another in a line, a recently deployed Starlink group becomes a stronger possibility.
Current orbital data and prediction limits
SpaceTracker.live uses current general perturbations orbital records and browser-side SGP4 propagation for Earth-orbiting spacecraft. Fresh orbital elements improve short-term pass predictions, but no public orbital prediction should be treated as safety-critical spacecraft telemetry. The calculations are designed for educational skywatching. For CelesTrak background and GP data formats, see CelesTrak GP documentation.
More satellite tools
For one spacecraft at a time, use the main Starlink tracker. To see a broader set of spacecraft currently above your observer, open Satellites Above Me. The Satellite Pass Predictions page is useful when you already know the satellite you want to follow. Together these tools separate orbital tracking from the stricter question of whether an object is likely to be optically visible tonight.
Frequently asked questions
Will Starlink be visible tonight?
The tool searches current Starlink orbital records for candidate passes that occur in a dark enough sky while the satellite is sunlit.
Does this show a Starlink train?
It can identify passes from active Starlink spacecraft, but a compact train is most likely soon after a launch and is not guaranteed.
Why did I not see a predicted Starlink pass?
Cloud, local obstructions, spacecraft orientation and actual brightness can make a geometrically favorable pass difficult to see.
Do Starlink satellites blink?
They usually appear as steady reflected-sunlight points rather than showing regular aircraft navigation-light flashes.
Where does the orbital data come from?
SpaceTracker.live retrieves current public Starlink GP orbital records and propagates them with SGP4 in the browser.