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Understanding NORAD IDs: The Definitive Guide to Satellite Tracking

Air traffic control radar tower against a clear blue sky, with antennas and equipment visible.
Image: NASA/KSC
Quick answer · as of 16 Aug 2026

NORAD IDs are unique identifiers for tracking over 29,000 objects in space, including active satellites and debris.

NORAD IDs, or North American Aerospace Defense Command Identifiers, are unique numbers assigned to each object tracked in Earth's orbit. These identifiers are crucial for monitoring over 29,000 catalogued objects, including 18,550 active satellites and various space debris.

What is a NORAD ID?

A NORAD ID is a five-digit number assigned to each object in orbit, starting from 00001 for the first artificial satellite, Sputnik 1. This system helps track both operational satellites and debris, ensuring safe navigation in space. As of now, the NORAD catalogue includes 29,232 objects, with a significant portion being debris.

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How are NORAD IDs Assigned?

NORAD IDs are sequentially assigned upon an object's entry into orbit. The process involves radar and optical tracking, with the data managed by the United States Space Surveillance Network. This system allows for the precise tracking of objects, which is crucial for collision avoidance and orbital management.

Why are NORAD IDs Important?

NASA control room with digital clocks and screens displaying leap second adjustment.
NASA Adds Leap Second to Master Clock · Image: NASA/GSFC

NORAD IDs are essential for maintaining space situational awareness. They allow agencies to track active satellites, like the 10,930 Starlink satellites currently in orbit, and manage space traffic. This tracking helps prevent collisions, a growing concern with the increasing number of satellites and debris.

NORAD IDs and Space Debris

Person giving a presentation on tracking cameras with slides projected on a screen.
Presentation on Improved Tracking Cameras · Image: NASA/KSC

Space debris poses a significant risk to operational satellites and the International Space Station (ISS). NORAD IDs help track debris, allowing for timely manoeuvres to avoid collisions. The Orbital Radar Debris Map provides a visual representation of these tracked objects.

How to Find NORAD IDs

NORAD IDs can be found in various databases and tracking tools. The Orbital Radar Satellite Directory offers a comprehensive list of active satellites and their NORAD IDs. This resource is invaluable for researchers and enthusiasts alike.

Key Takeaways

NORAD IDs are vital for tracking the vast number of objects in orbit. They ensure safe space operations and help manage the increasing congestion in Earth's orbital environment. Understanding these identifiers is crucial for anyone involved in space activities.

Frequently Asked Questions

What is the purpose of a NORAD ID?
A NORAD ID uniquely identifies each object in orbit, facilitating tracking and management of satellites and debris.
How many objects are tracked by NORAD IDs?
As of now, NORAD IDs track 29,232 objects, including 18,550 active satellites and a large amount of space debris.
Where can I find a satellite's NORAD ID?
You can find a satellite's NORAD ID in databases like the Orbital Radar Satellite Directory, which lists active satellites and their identifiers.
How do NORAD IDs help in collision avoidance?
NORAD IDs allow precise tracking of objects, enabling timely manoeuvres to avoid collisions, especially with space debris.
Are NORAD IDs used globally?
Yes, NORAD IDs are used internationally to track objects in orbit, providing a standard reference for space agencies worldwide.
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