The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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The consolidation of knowledge on all known objects in space is a fundamental aspect of the operational support activities of ESA's Space Debris Office.
This knowledge is maintained and kept updated through ESA's DISCOS database (Database and Information System Characterising Objects in Space).
DISCOS serves as a single-source reference for information on launch details, orbit histories, physical properties and mission descriptions for about 42 100 objects tracked since Sputnik 1, including nearly 109 million orbit records in total. The US Space Surveillance Network provides a continuous flow of orbit data for all tracked, unclassified objects.
The latest updated version of this chart can be accessed in the ESA Space Debris User Portal.