Satellite Information

Our World in Data – https://ourworldindata.org/space-exploration-satellites
Contains interactive charts on space exploration an satellites  (inc annual number of satellites launched by country) for each year from 1957-2023.

Gunter’s Space Page – https://space.skyrocket.de/index.html
Established in 1996, Gunter’s Space Page is one of the leading and most comprehensive online resources dedicated to space missions, satellites, rockets, and related space exploration activities.

Jonathan’s Space Report – https://planet4589.org/
Jonathan’s Space Report is a newsletter about the Space Age, hosted at Jonathan’s Space Page. It is written by Jonathan McDowell, a Harvard-Smithsonian Center for Astrophysics astrophysicist. It is updated as McDowell’s schedule permits, but he tries to publish two issues each month.

The European Space Agency
A Summary of Space Environment Statistics – https://sdup.esoc.esa.int/discosweb/statistics/ updated on 14 August 2024 is a useful summary of space objects.

The Annual Space Environment Report – https://www.sdo.esoc.esa.int/environment_report/Space_Environment_Report_latest.pdf.

Issued in July 2024 contains more detailed information up to 2023 about space objects and debris and events.

Celestrak
https://celestrak.org/ contains a lot of more technical articles and information that is regularly updated
The satellite catalogue by country https://celestrak.org/satcat/boxscore.php is useful

The United Nations Office for Outer Space Affairs
https://www.unoosa.org/oosa/osoindex/search-ng.jspx has an online Index of Objects launched into Outer Space – it shows which objects have been registered with the UN and which haven’t – so many, inc Starlink satellites haven’t registered.

Also:

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