ESA's Test Bed Telescopes (TBT) are two twin telescopes built by ESA to test different observational activities in the optical detection of NEO’s and satellites or space debris. The two telescopes...

The Schmidt telescope of the Centro Astronómico Hispano en Andalucía (CAHA Schmidt) was first installed in 1955 at the Hamburg Observatory in Germany, and subsequently moved to the Calar Alto...

ESA's Optical Ground Station (OGS) is a facility built by ESA to support tests of optical communication between Earth and orbiting satellites. The instrument is routinely used by ESA's Space Safety...

The May monthly update is still ongoing. Some objects, may be temporarily unavailable.

Additional information

Warning: on April 13th at 09:00 UTC, some maintenance activities will be performed on our system. Some services may be temporarily unavailable.  

April 2023 Newsletter

Asteroid 2023 DZ2

March 2023 Newsletter

Warning: on March 6th at 09:00 UTC, some maintenance activities will be performed on our system. Some services, may be temporarily disrupted or unavailable.  

Warning: on March 2nd at 09:00 UTC, some maintenance activities will be performed on our system. Some services, including the ephemeris and APIs, may be temporarily disrupted or unavailable.