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How to Track Satellites: A Comprehensive Guide

Archival photo of Echo 1 satellite over Goldstone Tracking Station, NASA's Jet Propulsion Laboratory, August 12, 1960.
Image: NASA/JPL
Quick answer · as of 20 Jun 2026

Discover how to track satellites in orbit, including understanding orbital parameters and using tracking tools effectively.

Tracking satellites involves using data on their orbits to predict their positions in the sky. With 18,070 active satellites, understanding orbital parameters and using tools like the Orbital Radar pass predictor is essential.

Understanding Satellite Orbits

Satellites orbit Earth in predictable paths defined by parameters such as altitude, inclination, and eccentricity. These parameters help determine a satellite's trajectory and visibility. For example, the International Space Station (NORAD ID 25544) orbits at an altitude of approximately 420 km with an inclination of 51.6 degrees.

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Tools for Satellite Tracking

Group of people attending TDRS-M NASA Social event with spacecraft model in background.
TDRS-M NASA Social · Image: NASA/KSC

Several tools are available for tracking satellites. Websites like Orbital Radar's Satellite Library provide detailed information on satellite positions. Apps and software can also predict visible passes, allowing observers to know when and where to look in the sky.

How to Use NORAD Data

NORAD (North American Aerospace Defense Command) provides Two-Line Element sets (TLEs) that describe satellite orbits. These are used by tracking software to predict satellite positions. Understanding how to read TLEs is crucial for accurate tracking.

With 10,612 active Starlink satellites, tracking these requires specific tools. The Starlink Tracker offers real-time data on their positions. Starlink satellites are often visible due to their low Earth orbit and large numbers.

Key Takeaways

Tracking satellites involves understanding orbital mechanics and using the right tools. With thousands of satellites, including 9,343 operational Starlink units, knowing how to interpret data is essential for enthusiasts and professionals alike.

Frequently Asked Questions

What tools can I use to track satellites?
You can use websites like Orbital Radar, mobile apps, and software that utilise NORAD data to predict satellite positions and visible passes.
How do I read a Two-Line Element set?
A TLE contains two lines of data describing a satellite's orbit. Key elements include inclination, right ascension, eccentricity, and mean motion.
Can I see satellites with the naked eye?
Yes, many satellites are visible to the naked eye, especially those in low Earth orbit like the ISS and Starlink satellites. Use a pass predictor for timings.
Why is NORAD data important for tracking?
NORAD provides accurate orbital data essential for predicting satellite positions, ensuring tracking software can offer precise information.
What are the challenges of tracking satellites?
Challenges include the large number of satellites, orbital debris, and the need for accurate, up-to-date data to predict positions effectively.
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