¿DÓNDE ESTÁ LA ISS AHORA?

The ISS never stops moving — that's why "right now" changes every second

The International Space Station travels at about 27,600 km/h (17,150 mph), meaning it covers roughly 7.7 kilometers every second. In the time it takes you to read this sentence, it has already moved several kilometers. That's why asking "where is the ISS right now" doesn't have one fixed answer — it only makes sense with data calculated in real time, not a static snapshot from a few minutes ago.

How is the exact position calculated?

There's no camera permanently watching the ISS from the ground to "see" it on a map. What's actually used is orbital data (technically called TLE, Two-Line Element sets) published by organizations like NORAD/CelesTrak, updated several times a day from radar tracking of the station. With that data, an orbital propagation model precisely calculates where the station will be at any given moment — past, present, or near future.

This site continuously recalculates that position and plots it on a 2D map and 3D globe, so you can see the station's real movement without needing to understand the orbital math behind it.

Altitude, speed, and coordinates: the live numbers

Besides the position on the map (latitude and longitude), a good tracker should also show you the altitude (around 400 km, though it varies slightly since the station loses height from residual atmospheric drag and needs periodic correction) and the speed (that steady ~27,600 km/h, with small orbital variations). These three values — position, altitude, and speed — fully define where the station is at any instant.

Why do some sites show a slightly different position?

It's common to notice small differences between trackers. The reason is almost always the age of the orbital data each one uses: a TLE that's several days old accumulates a small prediction error compared to one refreshed a few hours ago. Reliable trackers — like this one — refresh that data frequently to minimize that drift.

Quick questions

How is the exact ISS position determined?

It's calculated by propagating official orbital data (TLE) published regularly by organizations like NORAD/CelesTrak. A mathematical model uses that data to predict the station's exact position at any moment, accurate to within a few kilometers.

How often does the ISS's position change?

Constantly: it travels at about 27,600 km/h, covering roughly 7.7 km every second. That's why a good tracker recalculates and refreshes the map every few seconds, not once a minute.

Why does the position vary slightly between different sites?

Because they use orbital data (TLE) of different ages. The more recent the TLE, the more accurate the calculated position — that's why reliable trackers refresh that data several times a day.

Can the ISS drift from its predicted path?

Slightly, due to drag from residual atmosphere at 400 km altitude, which slowly slows it down. That's why orbital data is updated frequently and reboost maneuvers are periodically performed using engines on docked spacecraft.